Maths Quiz - Multiples 3 (Easy) (Answers)
This is the third in our Easy section of Eleven Plus maths quizzes on Multiples. In it we shall ask you to find common multiples, and odd men out, as well as giving you some tips to help you in your exams. We’ll also be looking at multiples of fractions and decimal numbers.
That’s right – fractions and decimals do have multiples, which seems odd given that whole numbers cannot have fractions as their multiples. It’s all to do with whether or not a number can be divided by another without leaving a remainder. So, 21⁄2 is a multiple of 1⁄2 because 5 x 1⁄2 = 21⁄2. However, 21⁄2 is NOT a multiple of 5. That’s because 5 x 0.5 = 21⁄2 and 0.5 is not a whole number.
Okay, now we’ve cleared that up, it’s time for the quiz. Read all the questions carefully – there are some crafty onesto fool the careless. Don't let them fool you!
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15, 25 and 35 are not divisible by 4
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6 is not divisible by 12 or 5, while 12 and 24 are not divisible by 5
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140 is not divisible by 60 or 30, just like 14 is not divisible by 6 or 3. If all three numbers end with a 0 you can ignore them
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42 is not divisible by 4. Sometimes the times tables don’t go up high enough – if that is the case then you’ll have to do some calculations. Just divide th large numbers by 4, 7 and 6 to find out whether they are multiples
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3 x 21?3 = 7
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6 x 17 = 102. None of the other options appears in the 17 times table
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The other three options are taken from the 4, 8 and 12 times tables
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34, 42 and 78 cannot be divided by 4 without a remainder
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The quickest way to work out whether or not a number is a multiple of two is to ask yourself, “Is the number even?”
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That’s because 8 goes into 200 but not into 100: 624 ÷ 8 = 78 BUT 524 ÷ 8 = 65.5
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