Multiplication, multiples & factors

Multiplication

Name: ______________________________Date: ______________Score: ______ / 20

1.
Work out 6 × 4.
2.
4 × 6 gives the same answer as 6 × 4.
True False
3.
A bar of chocolate is split into 6 lots of 4 pieces. How many pieces is that?
1. A10
2. B24
3. C20
4.
The law that lets you group and multiply numbers in any order is the...?
1. Aadding law
2. Bsharing law
3. Cassociative law
5.
Calculate 18 × 5 using factors: 18 = 9 × 2, so 18 × 5 = 9 × 10 = ?
6.
Magda works out 14 × 5. She uses 14 = 7 × 2, so 14 × 5 = 7 × 10 = ?
7.
To work out 4 × 15, Amir writes 4 × 5 × 3. What is 4 × 5?
1. A20
2. B9
3. C45
8.
Work out 4 × 15.
9.
Estimate 27 × 4 by rounding 27 to 30. What is 30 × 4?
1. A120
2. B108
3. C70
10.
Work out 27 × 4.
11.
Using the grid method for 27 × 4, what is 20 × 4?
12.
Using the grid method for 27 × 4, what is 7 × 4?
13.
In the grid method you found 80 and 28 for 27 × 4. What do you do next?
1. Asubtract them: 80 − 28
2. Bmultiply them: 80 × 28
3. Cadd them: 80 + 28
14.
Breaking 27 into 20 and 7 to multiply is called...?
1. Apartitioning the number
2. Brounding the number
3. Cdoubling the number
15.
Work out 47 × 5.
16.
Work out 29 × 4.
17.
Work out 89 × 3.
18.
Work out 74 × 6.
19.
Grid method for 47 × 3: 40 × 3 = 120 and 7 × 3 = 21. What is 47 × 3?
20.
Work out 51 × 5.

Answer key

Multiplication, multiples & factors — Multiplication