Counting in multiples

Counting in 3s, 4s, 8s, 25s, 50s and 1000s

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Try each question. If you're stuck, leave it and come back. The answer key is on the last page.

1
Count in 3s: 3, 6, 9, 12, ___ 3, 6, 9, 12, ___
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2
Count in 4s: 4, 8, 12, ___, 20 4, 8, 12, ___, 20
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3
Which number comes next? 8, 16, 24, 32, ___ A) 36 B) 38 C) 40 D) 42
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4
Count in 25s: 25, 50, 75, ___ 25, 50, 75, ___
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5
Which number is a multiple of 50? A) 155 B) 250 C) 305 D) 475
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6
Put these multiples of 1000 in order, smallest to largest. Put these in order: 4000, 1000, 7000, 3000
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7
Count back in 50s: 300, 250, ___, 150 300, 250, ___, 150
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8
Put these multiples of 8 in order, smallest to largest. Put these in order: 48, 16, 32, 24
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9
Count in 1000s: 2000, 3000, 4000, ___, 6000. What is the missing number? A) 4500 B) 5000 C) 5500 D) 6500
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10
Put these multiples of 1000 in order, smallest to largest. Put these in order: 6000, 9000, 2000, 5000
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Answer key

Counting in multiples · for parents and teachers

1
15
12 + 3 = 15. Counting in 3s means adding 3 each time.
2
16
12 + 4 = 16, and 16 + 4 = 20. The missing number is 16.
3
40
32 + 8 = 40. Counting in 8s means adding 8 each time.
4
100
75 + 25 = 100. Counting in 25s is useful for money - four 25p coins make £1.
5
250
250 = 5 × 50, so it is a multiple of 50. The others do not end in 00 or 50.
6
1000, 3000, 4000, 7000
1000 < 3000 < 4000 < 7000. Count up: one, three, four, seven thousands.
7
200
250 - 50 = 200. Counting back in 50s means subtracting 50 each time.
8
16, 24, 32, 48
16 = 8×2, 24 = 8×3, 32 = 8×4, 48 = 8×6. In order: 16, 24, 32, 48.
9
5000
4000 + 1000 = 5000, and 5000 + 1000 = 6000. The missing number is 5000.
10
2000, 5000, 6000, 9000
2000 < 5000 < 6000 < 9000.