b. Find the value of 1 acre of land if 15 acres cost $771.15.
$ 51.41
15 ) $ 771.15
75
21
15
6.1
6.0
.15
.15
Compare the steps in (b) with the corresponding steps in (a). The pupil will experience no difficulty in telling the unit that each quotient figure represents, for he knows that dividing any number into parts does not change its unit.
Presentation:—
a. 12 is contained in 36 how many times?
12 ) 36
3
b. Multiply both dividend and divisor in (a) by 2.
24 is contained in 72 how many times?
24 ) 72
3
c. Multiply both dividend and divisor in (a) by 10.
120 is contained in 360 how many times?
120 ) 360
3