SOLUTION: Solve the following problems using the Russian peasant algorithm 25 X 17 48 X 39 and 120 X 42
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Question 201354This question is from textbook Mathematics
: Solve the following problems using the Russian peasant algorithm 25 X 17 48 X 39 and 120 X 42
This question is from textbook Mathematics
Answer by RAY100(1637) (Show Source): You can put this solution on YOUR website!
25 * 17
.
12,,,,34,,,,,even(12), not add
6,,,,,68,,,,,even (6), not add
3,,,,,136
1,,,,,272
.
,,,,,,408 (136 + 272) ,,,,,close to 425
.
.
48 * 39
.
24,,,,,78, even(24), not add
12,,,,,156, even(12), not add
6,,,,,,312, even(6), not add
3,,,,,,624,
1,,,,,,1248
.
,,,,,,,1872,,(624 +1248),,,,exactly 1872
.
.
120 * 42
.
60,,,,,,84, even (60), not add
30,,,,,168, even(30), not add
15.,,,,336
7,,,,,,672
3,,,,,1344
1,,,,,2688
.
,,,,,,5040,,,,(336+672+1344+2688),,,exactly 5040
.
again, first column divide by 2,(drop remainders),,second column multiply by two. Cross out even numbers in first column , and mates in second column. Then add remaining second column.
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