Found Their Marbles
(page 65)
 Here we have a solution to Found Their marbles (page 65) from some sixth-graders in New England. Look at what they've done. What do you like about their presentation? What else could they have done? (hint: what was the original question in the problem??) This solution is from Allison Fox, Sam McGrath, Reagan Teed and Kimmy Schmidt from Mr. Welch's sixth grade math class at Williams Middle School in Longmeadow Massachusetts. We think we have the solution to the problem, Found Their Marbles. Calvin has 16,384 marbles. Xavier has 3,000 marbles. Alice has 4,650 marbles. We got Calvin's by using a chart: ``` Days Marbles     2 1 4 2 6 4 8 8 10 16 12 32 14 64 16 128 18 256 20 512 22 1,024 24 2,048 26 4,096 28 8,192 30 16,384     We got Alice's by also using a chart: Days Marbles 1 10 2 20 3 30 4 40 5 50 6 60 7 70 8 80 9 90 10 100 11 110 12 120 13 130 14 140 15 150 16 160 17 170 18 180 19 190 20 200 21 210 22 220 23 230 24 240 25 250 26 260 27 270 28 280 29 290 30 300 ``` Then, we added all of the totals up and got 4,650. We got Xavier's total by multiplying 30 times 10 and got 3,000. So Xavier had 3,000 marbles. What do you think about this solution? Want to put in one of your own? Just write to back to the Answer Book page