Multiplication and division

Tests of divisibility

Name: ______________________________Date: ______________Score: ______ / 20

1.
How can you tell if a number is divisible by 2?
1. AIts ones digit is even (0, 2, 4, 6 or 8)
2. BIts ones digit is odd
3. CIt ends in 5
4. DIt is bigger than 100
2.
To test if a number is divisible by 4, what do you check?
1. AWhether its last two digits make a number divisible by 4
2. BOnly its first digit
3. COnly its ones digit
4. DWhether all its digits add to 4
3.
Which of these numbers is divisible by 4?
1. A632
2. B342
3. C218
4. D113
4.
Which of these numbers is divisible by 4?
1. A488
2. B342
3. C218
4. D113
5.
Is 114 a multiple of 4?
1. ANo — 114 ÷ 4 is not a whole number
2. BYes
3. COnly when doubled
4. DYou cannot tell
6.
Which of these is a multiple of 8?
1. A24
2. B30
3. C20
4. D14
7.
Which of these numbers is divisible by 8?
1. A48
2. B20
3. C36
4. D52
8.
A number is divisible by 8. Is it also divisible by 4?
1. AYes, always
2. BNo, never
3. COnly sometimes
4. DYou cannot tell
9.
Which number is even (divisible by 2)?
1. A146
2. B113
3. C555
4. D207
10.
What is a divisibility test useful for?
1. AChecking if one number divides exactly into another, without doing the division
2. BFinding the exact answer to a division
3. CRounding a number
4. DAdding two numbers quickly
11.
48 is divisible by 8.
True False
12.
A number is divisible by 2 if its last digit is odd.
True False
13.
175 is divisible by 4.
True False
14.
131 is divisible by 4.
True False
15.
136 is divisible by 2.
True False
16.
175 is divisible by 8.
True False
17.
124 is divisible by 4.
True False
18.
121 is divisible by 8.
True False
19.
51 is divisible by 2.
True False
20.
195 is divisible by 4.
True False

Answer key

Multiplication and division — Tests of divisibility

1.A. Its ones digit is even (0, 2, 4, 6 or 8)
2.A. Whether its last two digits make a number divisible by 4
3.A. 632
4.A. 488
5.A. No — 114 ÷ 4 is not a whole number
6.A. 24
7.A. 48
8.A. Yes, always
9.A. 146
10.A. Checking if one number divides exactly into another, without doing the division
11.True
12.False
13.False
14.False
15.True
16.False
17.True
18.False
19.False
20.False