My School Trip — The Cleanest Village (Preparatory Stage Math)
Worksheet A: Concepts
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7 am.
Solution
Morning (am) comes before afternoon (pm) on the same day; 7 am is earlier than 4 pm.
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Ruler.
Solution
A ruler measures length; a weighing scale measures mass.
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Bucket.
Solution
Capacity compares how much fits; a bucket has greater capacity than a bottle.
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8.
Solution
Skip count by 2; after 6 comes 8 to strengthen even-number recognition.
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Biscuit pack < full water bottle < watermelon.
Solution
Use everyday mass sense to rank objects by heaviness.
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2 snacks.
Solution
Repeating block [fruit, snacks, snacks]; extend with two snacks after each fruit.
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Kilometers.
Solution
Town-to-village distances are large; kilometers fit better than centimeters.
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₹10, ₹20, ₹50.
Solution
Order by face value to build currency sense and comparison.
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Most is 4; only one row.
Solution
Represent counts as dot stacks; tallest stack equals 4 appearing once.
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11 cm, 13 cm.
Solution
Pattern adds 2 cm each time; extend by +2 twice.
Worksheet B: Computational Skills
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5.
Solution
Combine sets: 3 + 2 = 5 to practice addition facts.
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5.
Solution
Take-away: 6 − 1 = 5 to stabilize subtraction facts.
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3.
Solution
Complement to 10: 7 + 3 = 10 supports mental addition.
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20.
Solution
Add 5 each time for equal jumps: next is 20.
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13; 13 − 9 = 4; 13 − 4 = 9.
Solution
Fact family connects addition and subtraction around the same total.
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12 > 10.
Solution
12 has more ones past 10 than 10; use tens-and-ones comparison.
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23.
Solution
2 tens = 20; add 3 ones to make 23 (composition of numbers).
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13.
Solution
6 + 4 = 10, then +3 → 13; apply the same-friendly-number strategy.
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₹30.
Solution
Equal groups: 5+5+5+5+5+5 = 30 introduces multiplicative thinking.
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6 packets.
Solution
Partition 18 into groups of 3: 18 ÷ 3 = 6 to build grouping sense.
Worksheet C: Problem-Solving & Modeling
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Afternoon.
Solution
From 12 noon to 4 pm is 4 hours; compare intervals to reason about durations.
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Snack, snack.
Solution
Repeat [fruit, snack, snack]; after a fruit come two snacks to complete the block.
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About ₹20.
Solution
Round to a friendly number (₹10) and double to estimate the total cost.
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4 hops.
Solution
0→2→4→6→8 uses four equal jumps; links movement to skip counting.
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₹10 note.
Solution
Match exact value with currency recognition; ₹5 is insufficient, ₹20 exceeds the cost.
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₹10 + ₹2; or six ₹2 coins (examples).
Solution
Decompose totals into different denomination combinations to model part–whole.
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2 more.
Solution
Difference 14 − 12 = 2; communicate comparison with subtraction.
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1 biscuit each.
Solution
There are 12 children total; fair share of 12 biscuits gives 1 for each child.
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Most: bananas; least: oranges; difference: 3.
Solution
Compare counts 5, 2, 3; max 5 (bananas), min 2 (oranges); 5 − 2 = 3.
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3 pm.
Solution
Travel 12–1 pm, rest 1–2 pm, travel 2–3 pm to reach at 3 pm via timeline reasoning.