Math: Middle School: Grades 6, 7 and 8 Quiz - Algebra - Powers 2 (Answers)
This Math quiz is called 'Algebra - Powers 2' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.
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Remember those pesky little numbers called powers that turned out to be powerful little numbers? Here is another Math quiz on the subject designed to give you some more practice at using algebra and powers together. Good luck!
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9b = 9 x 9 = 81. In a question such as this you have to work out all the answers in order to determine which is correct
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27 + 81 + 243 = 351
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When you are given 10 to the power of something, remember that the power will be the number of zeros that follow the 1. 102 = 100 (2 zeros); 105 = 100,000 (5 zeros)
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By using a calculator we found the answer was 68,719,476,736. Without a calculator it might have taken us a week to work out!
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12 x 98
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Experiment with different values for x until you find the number that fits
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169 - 169 = 0
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All the incorrect answers have the value of 139
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An easy one to reward you for finishing the quiz! Strictly speaking, it should be plus or minus 3
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