CLASS 3 MATHS WORKSHEET LESSON 13

Time Goes On (Preparatory Stage Math)

Concepts • Computational Skills • Problem-Solving & Modeling • 10 questions each • 40% Easy, 40% Average, 20% Challenging • One toggle shows Answer + Solution

Worksheet A: Concepts

Easy

Q1. Name all 12 months in a year in order (write as a single comma-separated line).

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Answer

January, February, March, April, May, June, July, August, September, October, November, December.

Solution

A year has 12 months; listing builds calendar fluency for later tasks like July 2024 activity and festival dates.

Easy

Q2. How many days are in a week, and how many weeks are in one year approximately (state two numbers only)?

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Answer

7; about 52.

Solution

There are 7 weekdays; a common-year has 365 days which is about 52 weeks plus 1 day or 2 in leap years.

Easy

Q3. Which months have fewer than 30 days (write their names only)?

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Answer

February (28 or 29 days).

Solution

Only February has fewer than 30 days; all other months have 30 or 31 days in the standard calendar.

Easy

Q4. Write today’s date in DD/MM/YY format (use two digits for day and month; example format only).

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Answer

Example: 02/05/15 means 2 May 2015 in the birth certificate sample.

Solution

DD/MM/YY matches date entries in the chapter’s certificate and festival tables and helps with comparisons across years.

Average

Q5. July 2024 activity: How many Sundays does July 2024 have, and write the dates that fall on Thursdays (list compactly)?

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Answer

Sundays: 4 or 5 depending on that year’s layout; Thursdays include 4, 11, 18, 25 for a typical July layout.

Solution

The task mirrors “Make the calendar for July 2024, then answer” and builds mapping between weekday positions and dates.

Average

Q6. Three days after 22 July falls on which date, and what weekday is it (state date and day once)?

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Answer

25 July; weekday depends on that year’s calendar layout.

Solution

Counting forward builds date arithmetic; the exact day name comes from the month grid of that year as demonstrated in the chapter.

Average

Q7. A school closes on 7 July for 15 days. On which date will it reopen (write the date only; use forward-count on the month grid)?

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Answer

22 July.

Solution

Moving 15 days ahead on July’s grid lands at the 22nd; the chapter models such jumps using calendars for practice.

Average

Q8. Analog vs digital clocks: Write one difference between an analog clock and a digital clock in one short sentence each (two sentences total).

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Answer

Analog uses hour/minute hands on a dial; digital displays time with digits like 07:15.

Solution

Recognizing both displays supports reading quarter past and half past and timing tasks later in the chapter.

Challenging

Q9. Festivals and dates: Write any three festivals with sensible dates in DD/MM/YY (e.g., 15/08/—), and circle those that fall on the same date in different years (concept only).

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Answer

Examples: Independence Day 15/08/YY; Republic Day 26/01/YY; Christmas 25/12/YY; same dates recur yearly.

Solution

The table in the chapter asks to record festivals with date formats and notice repeated day/month pairs across years.

Challenging

Q10. Compare two years’ calendars: name one thing that stays the same and one thing that changes year to year (write two phrases only).

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Answer

Same: month names and 7-day week; Changes: day-date alignment and leap-year February length.

Solution

The “Observe last two years” table guides learners to tick features that are constant vs changing across calendars.

Worksheet B: Computational Skills

Easy

Q1. Read time: Draw or imagine the clock for 8:15 (“quarter past 8”). Which hand is at 8 and which at 3 (answer in words once)?

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Answer

Hour hand near 8; minute hand at 3 (15 min).

Solution

Quarter past means 15 minutes; analog faces show minute hand on 3 for :15 intervals by quarters.

Easy

Q2. Read time: Draw or imagine the clock for 8:30 (“half past 8”). Where does the minute hand point (state the number on dial only)?

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Answer

6.

Solution

Half past is 30 minutes; the minute hand points to 6 marking the 30-minute position.

Easy

Q3. Duration: Hetal started breakfast at 07:00 and ended at 07:15. How long did she take (write minutes only)?

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Answer

15 minutes.

Solution

From :00 to :15 is one quarter of an hour; timing practice uses analog faces in the chapter.

Easy

Q4. Fill: Which takes longer—5 minutes or 20 minutes (choose one), and name one activity that fits that time (one example only)?

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Answer

20 minutes; example: short study revision.

Solution

The time-scale table asks learners to place activities under minutes, hours, days, weeks, months sensibly.

Average

Q5. Daily schedule: Match “Wakes up 7:00,” “Goes to school 8:00,” “Lunch 1:00,” “Plays 4:00,” “Studies 5:00,” “Sleep 9:00” to order from morning to night (write the six in order quickly).

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Answer

Wakes 7:00 → School 8:00 → Lunch 1:00 → Plays 4:00 → Studies 5:00 → Sleep 9:00.

Solution

The chapter’s “A day in the life” uses analog scenes; ordering builds temporal reasoning across a day.

Average

Q6. Minutes arithmetic: How many minutes are in 2 hours, and how many in 1 hour 30 minutes (write two numbers only)?

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Answer

120; 90.

Solution

1 hour = 60 minutes; convert composite durations to minutes as per the time tables given.

Average

Q7. Birth certificate reading: If 02/05/2015 is the birth date, how old will the child be on 02/05/2025 and in 2030 (write the two ages)?

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Answer

10 years; 15 years (on 02/05/2030).

Solution

Subtract years on the same date; the chapter’s certificate task asks such direct date-to-age calculations.

Average

Q8. “How many weeks in a year?” Is 53 weeks correct? If not, how many full weeks are there (choose Yes/No, then a number)?

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Answer

No; 52 full weeks (plus 1–2 days).

Solution

The last-two-years table leads learners to conclude about weeks by inspecting 365/366 day totals.

Challenging

Q9. Duration from clock pairs: Beginning 02:00 to end 02:05 is how many minutes, and 02:00 to 02:15 is how many (write both; mirror the minute-hand charts)?

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Answer

5 minutes; 15 minutes.

Solution

Reading elapsed time from start and end faces is practiced in the chapter’s mini-frames for minute progressions.

Challenging

Q10. “Age riddle”: Hetal is twice her brother’s age and also 10 years older than him. Guess their ages (two numbers) that fit both statements simultaneously, or explain why not possible in natural ages now.

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Answer

No natural ages satisfy both at the same time; “twice” and “10 more” conflict unless the brother’s age is 10, then Hetal would be 20, which is not 10 more than 10.

Solution

The chapter invites discussion on reasoning strategies for ages; this highlights checking consistency of conditions.

Worksheet C: Problem-Solving & Modeling

Easy

Q1. Write three activities and place each in a suitable time-scale column: minutes, hours, days, weeks, or months (one per activity; example: “knitting a sweater → months”).

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Answer

Examples: Brush teeth → minutes; School period → hours; Complete a chapter → days/weeks; Knit sweater → months.

Solution

The “Fill the table by durations” task builds sense of appropriate time units for real-life activities.

Easy

Q2. Make a personal date table: write date of birth, date admitted to school, to Class I, and to Class III in DD/MM/YY (fill as records, not calculated here).

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Answer

Answers vary; entries should be valid DD/MM/YY dates.

Solution

Recording official dates reinforces using consistent formats like the certificate shown in the chapter.

Easy

Q3. “Quarter/half past” creation: Write two new times and state them in words (e.g., 03:15→quarter past 3; 05:30→half past 5). Provide both formats once each.

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Answer

Examples: 09:15 → quarter past 9; 11:30 → half past 11.

Solution

Linking numeric time to spoken phrases is emphasized via analog clock drawing tasks in the chapter.

Easy

Q4. Calendar compare: Find one month this year that “looks like” January (same weekday-date alignment pattern), similar to “July and January look the same” idea; state the pair found (names only).

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Answer

Answers vary by year; months with identical weekday starts align similarly to January for that year.

Solution

The “calendar game” asks learners to compare grids and detect same patterns of weekday-date layout across months.

Average

Q5. “How many minutes?” Fill a table: School period, Lunch break, Play period, Dinner, Brushing teeth (write sensible minutes for each, increasing reasoning for durations).

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Answer

Examples: Period 35–45; Lunch 30–45; Play 30–60; Dinner 15–30; Brushing 2–3.

Solution

The chapter’s minute-frames develop estimation and checking by comparing activity durations.

Average

Q6. “After how many days?” If a certificate was issued on 18/05/2015 and the birth was on 02/05/2015, how many days after birth was it issued (compute quickly using the month’s dates)?

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Answer

16 days after birth.

Solution

Count inclusive/exclusive carefully; 2→18 in May is 16 days difference, matching the chapter’s birth certificate exercise.

Average

Q7. “Two months vs two weeks”: Give one activity that sensibly takes months and one that takes weeks, using the Nani’s garden example (name two activities only once each).

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Answer

Knit a sweater → months; Grow radish → weeks (2–3 weeks).

Solution

The garden note: radish in weeks; cabbage/capsicum/carrot/cauliflower in months; sweater took two months in the story scene.

Average

Q8. “Before/after” day names: If today is Wednesday, two days after is which day, and three days before is which day (write two weekday names only)?

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Answer

Friday; Sunday.

Solution

Weekday cycles practice jumps like those used on the calendar for dates and festivals mapping.

Challenging

Q9. Draw hands logically: Without a picture, state where hour and minute hands roughly point at 01:45, 03:20, and 11:55 (write three brief descriptions like “minute near 9”).

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Answer

01:45 → minute at 9, hour near 2; 03:20 → minute at 4, hour just past 3; 11:55 → minute at 11, hour near 12.

Solution

Estimating hand positions supports mental reading/drawing; the chapter asks learners to sketch hands for given times.

Challenging

Q10. “Weeks computation”: How many full weeks and leftover days are in 45 days (write as “__ weeks and __ days”)? Also answer for 365 days quickly in the same format once.

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Answer

6 weeks and 3 days; 52 weeks and 1 day.

Solution

Divide by 7 to break days into weeks plus remainder; this links to the chapter’s week-year reasoning prompts.

Two best activities

Activity 1: Calendar Detective — July Game + Festivals Board

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Answer

Build July 2024, answer Sundays/Thursdays/“3 days after” queries, then fill a festival wall with DD/MM/YY and spot same-date festivals.

Solution

Learners draw the July grid, mark Sundays and Thursdays, and solve “close +15 days” reopening. Next, teams list festivals with dates in DD/MM/YY, circle repeats, and compare two yearly calendars to note what stays the same vs changes, consolidating calendar literacy.

Activity 2: Time Lab — Analog vs Digital + Duration Races

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Answer

Practice “quarter past/half past” on analog faces, translate to digital, then time short tasks with a sand clock/stopwatch and record minutes.

Solution

Groups draw hands for given times (01:45, 03:20, 08:15, 08:30), then show digital forms. Using a sand clock they measure activities (reading a page, tidying desk), fill a minutes table, and discuss which tasks fit minutes, hours, days, or months, aligning with chapter pages on durations and analog–digital differences.