Page 49 - monopoly

1 ten = 10 ones

(ii) 10 ones – 2 ones = 8 ones

(iii) 9 tens – 3 tens = 6 tens

(iv) 9 hundreds – 4 hundreds = 5 hundreds

(v) 8 thousands – 6 thousands = 2 thousands

Thus 9000 – 6432 = 2568

MENTAL MATHS-3

A. Subtract the number:

(a) Th H T O (b) Th H T O (c) Th H T O

5 4 2 7 6 2 8 7 7 1 3 4
– 2 9 6 8 – 3 5 9 8 – 5 7 5 8

(d) Th H T O (e) Th H T O (f) Th H T O

5 3 6 1 6 7 8 4 5 7 1 6
– 3 8 6 4 – 3 8 8 5 – 2 9 8 8

B. Subtract the number:

(a) Th H T O (b) Th H T O (c) Th H T O

5 7 0 0 7 6 0 0 8 1 2 0
– 3 7 8 2 – 2 4 7 8 – 6 5 3 7

49
Subtraction
Mathematics-3