Math: Elementary School: Grades 3, 4 and 5 Quiz - Addition and Subtraction 5 (Answers)
This Math quiz is called 'Addition and Subtraction 5' and it has been written by teachers to help you if you are studying the subject at elementary school. Playing educational quizzes is an enjoyable way to learn if you are in the 3rd, 4th or 5th grade - aged 8 to 11.
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Addition and subtraction sums include the plus or minus sign. If you are worried about your addition and subtraction - don't be! With practice, they are very easy operations to carry out.
In this quiz you'll get some practice with dealing with really easy numbers. TIP: With numbers less than 100, add the tens first and then add the units. For example:
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TIP: With numbers less than 100, add the tens first and then add the units. 12 + 6 - 2 = (10) + (2 + 6 - 2) = 10 + 6 = 16
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23 + 6 - 4 = (20) + (3 + 6 - 4) = 20 + 5 = 25
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10 + 23 + 5 - 1 = (10 + 20) + (3 + 5 - 1) = 30 + 7 = 37
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17 - 8 = (10) + (7 - 8) = 10 - 1 = 9
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46 - 20 + 12 = (40 + 10 - 20) + (6 + 2) = 30 + 8 = 38
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12 + 12 + 12 = (10 + 10 + 10) + (2 + 2 + 2) = 30 + 6 = 36. Obviously, if you know that 12 × 3 = 36, you won't follow this procedure. Always BE ON THE LOOKOUT for short cuts
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34 + 15 + 6 - 1 = (30 + 10) + (4 + 5 + 6 - 1) = 40 + 14 = 54
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2 + 4 + 6 + 7 + 1 = (4 + 6) + (7 + 2 + 1) = 20. Try to group your numbers in lots of ten
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0 + 2 + 12 + 0 = (10) + (2 + 2) = 10 + 4 = 14. You could do this sum just by looking at it
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8 + 14 - 8 + 6 = (14 + 6) = 20. Cross out identical pairs of numbers that differ only in sign, e.g. +8 - 8 = 0. Don't waste your time adding them to your final calculations
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