MENTAL ARITHMETIC: MULTIPLICATION PROBLEMS (2) The distributive property To see the answer, pass your mouse over the colored area. 13. In this number 5,286 name the place value of each digit. The 5 has the value 5000; the 2 signifies 200; the 8 signifies 80; and the 6 has its absolute value of 6. 14. Calculate in writing by distributing the multiplier to each unit of the
14. a) 3 × 42 14. b) 5 × 34 = 5 × 30 + 5 × 4 = 150 + 20 = 170 14. c) 6 × 32 = 6 × 30 + 6 × 2 =180 + 12 = 192 14. d) 7 × 56 = 350 + 42 = 392 14. e) 8 × 97 = 720 + 56 = 776 14 f) 2 × 346 = 600 + 80 + 12 = 692 14. g) 3 × 475 = 1200 + 210 + 15 = 1425 14. h) 7 × 908 = 6300 + 56 = 6,356 14. i) 9 × 4,005 = 36,000 + 45 = 36,045 13. j) 6 × 7.30 = 42 + 1.80 = 43.80 14. k) 9 × 4.50 = 36 + 4.50 = 40.50 15. Whatever you wrote in the previous problem, do mentally here.
16. Calculate each column mentally.
17. You have 47 twenty-dollar bills. Calculate mentally how much 2 × 47 = 80 + 14 = 94. Therefore 20 × 47 = $940. 18. Multiply each column mentally. These are dollars and cents.
19. Multiply each column mentally by distributing the multiplier to the
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