Page 60 - Math Genius C2

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Step 2. Subtract the tens. t O

4 tens are left. 4 12 Subtract the ones first,
then subtract the tens.
So, 4 – 3 = 1 ten 5 2

Write 1 in the tens column. – 3 6
1 6
Thus, 52 – 36 = 16.
Think Tank Critical Thinking
example 2: Find: (a) 82 – 48 (b) 71 – 59
1. What is 3 tens less
Solution: (a) t O (b) t O than 70 ones?

7 12 6 11 2. What is the number just
after 95 – 52?
8 2 7 1
– 4 8 – 5 9 Math Insight

3 4 1 2 In subtraction, we always
write the greater number
Thus, 82 – 48 = 34. Thus, 71 – 59 = 12. on top and the smaller
number below it.
Practice Time 3C

1. Find the difference.

(a) t O (b) t O (c) t O (d) t O

4 5 3 0 2 7 4 0
– 8 – 4 – 9 – 5

2. Subtract the following.

(a) t O (b) t O (c) t O (d) t O

6 0 6 1 4 0 9 0
– 2 5 – 4 4 – 1 8 – 2 1

(e) t O (f) t O (g) t O (h) t O

2 5 5 1 5 2 7 2

– 1 6 – 1 7 – 2 8 – 2 4

58 Mathematics-2