POWERS OF 10 PROBLEMS (3) To see the answer, pass your mouse over the colored area. 17. Multiplying and dividing by powers of 10. Calculate mentally.
18. a) $450 = 10 × $45 18 b) $2,700 = 100 × $27 18. c) $56,000 = 1000 × $56 19. 512 is 512 ones. How much are 512 tens? 5,120
19. 512 hundreds? 51,200 512 thousands 512,000 20. a) 30 tens = 300 = 3 hundreds 20. b) 30 hundreds = 3000 = 3 thousands 20. c) 30 hundreds = 3000 = 300 tens 20. d) 30 thousands = 30,000 = 300 hundreds 21. a) If a number ends in a 0, then it is divisible by 10. 21. b) If a number ends in two 0's, then it is divisible by 100. 21. c) If a number ends in three 0's, then it is divisible by 1000. 22. Reduce to lowest terms.
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