Maths Quiz - Level 3-4 Numbers - Negative Numbers - Addition and Subtraction (Answers)
Let's chat about negative or minus numbers - they're a big deal in KS3 Maths! Integers are whole numbers, and they can be positive or negative. Positive numbers are above zero, and negatives are below, written with a minus sign. This quiz is all about diving into addition and subtraction with negative numbers!
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You might wonder why we need negatives, but they're everywhere, especially in temperatures. Anything colder than freezing is a negative Celsius number. Want to figure out how much warmer 16°C is than -5°C? You'll need to rock adding and subtracting negatives. It can be tricky, but here's a trick: rearrange the problem, like 21 - 16 = 5, so 16 - 21 = -5.
Practice makes perfect! Try this quiz and make adding and subtracting negatives second nature. You'll be a pro in no time!
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You can find more about this topic by visiting BBC Bitesize - Positive and negative numbers
Re-arrange the problem to 8 - 3
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8 + -3 is the same as 8 - 3
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Subtracting two negative numbers is similar to adding two positive numbers - just remember that the answer will be a negative number
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When two minus signs occur together, they act as a plus sign
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You could re-write the calculation as 4 + 17
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The higher the number, the lower the negative number
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Remember, negative number values get smaller the higher the numbers get
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It's useful to use a number line with 0 in the centre
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Two negatives cancel each other out. So, 50 - -11 + -3 is the same as 50 + 11 - 3
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On a number line, count to the left for negative numbers and right for positive numbers
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