Page 166 - Math Genius C3

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\ 08-Oct-2025 Bharat Arora Proof-10 Reader’s Sign _______________________ Date __________

Think Tank Logical Thinking
Sania’s family wants to go to the shopping mall
by the shortest route. The picture shows the
distance between the places using two different
routes.
1. Which route should they take: home to
shopping mall via the temple or home to
shopping mall via the bank?

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2. How much more distance will they cover if
they take the longer route?
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Subtraction of WeightS

Example 1: Subtract:

(a) 350 g from 900 g (b) 17 kg from 30 kg

Solution: (a) 8 10 (b) 2 10

9 0 0 g 3 0 kg
– 3 5 0 g – 1 7 kg

5 5 0 g 1 3 kg

Example 2: Subtract 14 kg 569 g from 21 kg 664 g.

Solution: Write the given measures in the kg and g columns such that the smaller
weight is written below the bigger weight. Then subtract them.

Step 1: Subtract grams (g). kg g

664 g – 569 g = 95 g 15
1 11 5 5 14
Write 95 under the g column. 2 1 6 6 4

Step 2: Subtract kilograms (kg). – 1 4 5 6 9
7 0 9 5
21 kg – 14 kg = 7 kg

Write 7 under the kg column.

Thus, 21 kg 664 g – 14 kg 569 g = 7 kg 95 g

164 Mathematics-3