1. Tell which of the following are like fractions and why:

2. Which of the above fractions can be added without changing the units ?

3. Add 34, 5, 78.

Give the steps in adding mixed numbers:

I. The change made in the fractions.
II. The method of adding the fractions.
III. The reduction of the sum of the fractions.
IV. What is written down and what is carried?

17

NOTE.

a+b indicates that the adjacent fractions in columns a and b are to be added.

111–120. b + c + d.

Use the table on page 22 for drill in subtraction.

Multiplication of Fractions

1. 3 x $5-$; 3 x 5 ft. ft.; 3 x § = g.

=

=

=

2. x7 of 7 = 3 x of 7 = 3 × 7 = 4•

3. Tell how to multiply a fraction by a whole number, or a whole number by a fraction.

5. Give a short rule for multiplying one fraction by another.

2. When both dividend and divisor are expressed in like units, how is the division performed?