Related Numbers puzzles ask pupils to find the link between numbers. They must spot the rule, such as addition or multiplication, then use it to solve the question.
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12 and 4 are related by dividing 12 by 4 to get the number in the middle. 3 is related to 3 in the SAME way (dividing 3 by 3 results in 1). 15 ÷ 5 = 3. The relationship is DIVIDE
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27 and 24 are related by adding 27 to 24 to get the number in the middle. 17 is related to 15 in the SAME way (adding 17 to 15 results in 32). 48 + 36 = 84. The relationship is ADD
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19 and 5 are related by subtracting 5 from 19 to get the number in the middle. 72 is related to 33 in the SAME way (subtracting 33 from 72 results in 39). 25 - 8 = 17. The relationship is SUBTRACT. Did you know that you use 17 muscles every time you smile?
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81 and 9 are related by dividing 81 by 9 to get the number in the middle. 16 is related to 4 in the SAME way (dividing 16 by 4 results in 4). 27 ÷ 9 = 3. The relationship is DIVIDE
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6 and 14 are related by multiplying 6 by 14 to get the number in the middle. 5 is related to 7 in the SAME way (multiplying 7 by 5 results in 35). 17 x 4 = 68. The relationship is MULTIPLY
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37 and 19 are related by subtracting 19 from 37 to get the number in the middle. 68 is related to 42 in the SAME way (subtracting 42 from 68 results in 26). 95 - 39 = 56. The relationship is SUBTRACT. The factors of 56 are 1, 2, 4, 7, 8, 14, 28 and 56. What are the factors of 68? Read below to find the answer
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82 and 17 are related by adding 82 to 17 to get the number in the middle. 35 is related to 16 in the SAME way (adding 35 to 16 results in 51). 24 + 32 = 56. The relationship is ADD
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24 and 3 are related by multiplying 24 by 3 to get the number in the middle. 15 is related to 6 in the SAME way (multiplying 15 by 6 results in 90). 7 x 9 = 63. The relationship is MULTIPLY
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52 and 13 are related by subtracting 13 from 52 to get the number in the middle. 78 is related to 43 in the SAME way (subtracting 43 from 78 results in 35). 97 - 48 = 49. The relationship is SUBTRACT. Have you had a chance to work out the factors of 68 yet? They are 1, 2, 4, 17, 34 and 68. Well done if you got all of them!
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112 and 17 are related by adding 112 to 17 to get the number in the middle. 96 is related to 5 in the SAME way (adding 96 to 5 results in 101). 76 + 45 = 121. The relationship is ADD
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