Fundamentals of Mathematics, 2008a

263
6
M = 3 )24
·
)4 1 = 3·6
1·1 = 18 1 = 18
1
Thus, 18 is 3 4
of 24.
4.7.3.2 Practice Set A
Exercise 4.7.1 (Solution on p. 289.)
Find 3 16
8
of
15 .
Exercise 4.7.2 (Solution on p. 289.)
What number is 9
10 of 5 6 ?
Exercise 4.7.3 (Solution on p. 289.)
is what number?
11
16 of 8
33
4.7.4 Missing Factor Statements
The equation 8 · M = 32 is a missing factor statement. We can nd the value of M that makes this
statement true by dividing (since we know that 32 ÷ 8 = 4).
Finding the Missing Factor
To nd the missing factor in a missing factor statement, divide the product by the known factor.
missing factor = (product) ÷ (known factor)
Missing factor statements can be used to answer such questions as
3
1.
8 of what number is 9 4 ?
2. What part of 1 2 13
7
is 1
14 ?
4.7.4.1 Sample Set B
Now, using
Available for free at Connexions