### Home > CC1MN > Chapter 1 > Lesson 1.2.4 > Problem1-94

1-94.

Simplify the expressions in parts (a) through (f). Then answer the questions in part (g) using complete sentences.

1. $13·1$

1. $12·2$

1. $1·5.5$

1. $4\ \cdot\frac{3}{3}$

1. $6\ \cdot\frac{1}{2}$

1. $14\ \cdot\frac{1}{7}$

Try to recall multiplication shortcuts for multiplying by $1$, $2$, or $\frac{1}{2}$.

When multiplying a whole number by a fraction, multiply the numerator of the fraction by the whole number and then divide by the denominator.

$6 \cdot \frac{1}{3} = \frac{6}{3} = 2$

1. Use the above examples to answer the following questions:

• What happens when you multiply a number by $1$?

• What happens when you multiply a positive number by a positive number less than $1$?

• What happens when you multiply a positive number by a number greater than $1$?