Page 125 - Start Up Mathematics_1
P. 125
12 Subtract the numbers on the number line.
(a) 43 – 8 =
35 36 37 38 39 40 41 42 43 44
(b) 33 – 9 =
24 25 26 27 28 29 30 31 32 33
(c) 21 – 7 =
13 14 15 16 17 18 19 20 21 22
(d) 50 – 5 =
43 44 45 46 47 48 49 50 51 52
(e) 91 – 6 =
83 84 85 86 87 88 89 90 91 92
(f) 72 – 4 =
66 67 68 69 70 71 72 73 74 75
Subtraction by Borrowing
Look at the given examples.
Tens Ones
(a) 7 3 Step 1: Look at the digits in the ones place.
5 is bigger than 3, so we cannot subtract
– 5 them.
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