Maths Quiz - Negative Numbers 3 (Medium) (Answers)
So, you have made it to the third in our series on Medium Eleven Plus maths quizzes on Negative Numbers – well done! In the previous ones we have only looked at addition and subtraction. In this one we introduce multiplication and division with negative numbers. That may sound daunting, but they are quite simple once you understand the rules!
Here are some tips which will help:
I hope that helps to clarify matters! You would do well to learn these facts – you never know when they might come in useful.
So, now you are armed with the necessary information, it’s time to begin the quiz. Good luck!
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6 x 2 = 12, so 6 x -2 = -12
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-9 + 13 is the same as 13 - 9, which equals 4. Next, 4 - -4 is the same as 4 + 4, which equals 8
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If we group the positives and negatives then the problem looks like this:
(-24 - -4) + (12 + 8) = -20 + 20 = 0. Remember: subtracting a minus number is the same as adding a positive one |
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55 + 20 = 75, so -55 - 20 = -75
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16 ÷ 4 = 4, so -16 ÷ 4 will equal -4
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-25 + 30 = 5. Overdrawn bank accounts are one of the places you will come across negative numbers in real life. They are best avoided!
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A negative times a negative equals a positive, so -5 x -5 is the same as 5 x 5
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A negative divided by a negative equals a positive, so -100 ÷ -10 is the same as 100 ÷ 10
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(-4 x 4) ÷ -2 = -16 ÷ -2. A negative divided by a negative equals a positive, so -16 ÷ -2 is the same as 16 ÷ 2 = 8
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17 - 23 + -5 + 10 = (-23 + -5) + (17 + 10) = -28 = 27 = -1