Chapter 4.1 (Mathematics 5)

Multiplication of a 3-digit number by a 1-digit number

Multiplication of a 3-digit number by a 1-digit number

Group Activity 1

In pairs:

  1. Form a 3-digit number using the digits 2, 3 and 5.
  2. Multiply the number by any one-digit number except 0 and 1.
  3. Discuss and share the results with other groups.

Example 1

Work out:

a) 231 × 3

b) 465 × 7

Exercise A

×

2

3

4

5

6

7

8

9

100

A2

Work out in pairs:

  1. 223 × 4 = 
  2. 104 × 7 = 
  3. 281 × 5 = 

A4

Multiply:

  1. 209 by 5
  2. 880 by 6
  3. 321 by 8

516  3 = 

A6

The price of a chair is Sh 715. How much did Mutua pay for seven such chairs?

A7

Three people contributed Sh 950 each for a charity walk. How much money did they contribute in total?