Fundamentals of Mathematics, 2008a

106 CHAPTER 2. MULTIPLICATION AND DIVISION OF WHOLE NUMBERS
2.3.2.1 Sample Set A
Find the following quotients using multiplication facts.
Example 2.12
18 ÷ 6
Since 6 × 3 = 18,
18 ÷ 6 = 3
Notice also that
18
−6
12
−6
6
−6
0
}Repeated subtraction
Thus, 6 is contained in 18 three times.
Example 2.13
24
3
Since 3 × 8 = 24,
24
3 = 8
Notice also that 3 could be subtracted exactly 8 times from 24. This implies that 3 is contained in
24 eight times.
Example 2.14
36
6
Since 6 × 6 = 36,
36
6 = 6
Thus, there are 6 sixes in 36.
Example 2.15
9)72
Since 9 × 8 = 72,
8
9)72
Thus, there are 8 nines in 72.
Available for free at Connexions