(Choose a Method)?

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You plan to earn $15 per week for a charity. Will you use estimation, mental math, paper and pencil, or a calculator to determine, how many weeks it will take you earn $1,000? Explain why.
(2) The monthly rate for a 3 year subscription to an online music service is $10. What is the total cost for 3 years?

2007-10-29 17:02:42 · 1 answers · asked by rosemariestewart64 1 in Science & Mathematics ➔ Mathematics

1 answers

Mental math: 1000 over 15 = 200 over 3 = 66 and two-thirds.

$10 times 12 times 3 = $360.

2007-10-30 01:17:47 · answer #1 · answered by Anonymous · 0⤊ 0⤋