Page 92 - Start Up Mathematics_3
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Check: 115 ÷ 5 = 23
(Divisor × Quotient) + Remainder
= (5 × 23) + 0 = 115 + 0
= 115 = Dividend
Thus, the division is correct.
Example 9: Divide 492 by 4 and check your answer.
123
Solution: 4 492
– 4↓
09 Check: 492 ÷ 4 = 123
– 8
12 (Divisor × Quotient) + Remainder
– 12 = (4 × 123) + 0
00 = 492 = Dividend
Thus, the division is correct.
Example 10: Divide 584 by 3 and check your answer.
194
Solution: 3 584
– 3 Check: 584 ÷ 3 = 194, remainder = 2
28
(Divisor × Quotient) + Remainder
– 27
014 = (3 × 194) + 2 = 582 + 2
– 12 = 584 = Dividend
02 Thus, the division is correct.
Example 11: Divide 317 by 3.
105
Solution: 3 317
– 3
01 → Note: 1 < 3, so we cannot divide.
– 0 3 × 0 = 0, which is less than 1.
17
Write 0 in the tens place of the quotient.
– 15
2 Subtract 0 from 1.
1 – 0 = 1
84
