EQUAL-SUM GROUPS |

Separate each group of numbers into TWO smaller groups so that the sum of the numbers in each of the small groups is the same. NOTE: there may be more than one way to do a problem. If so, can you find the other ways?

a) {3, 7, 9, 13} f) {5, 9, 10, 13, 19} b) {2, 3, 4, 7, 10} g) {1, 2, 7, 12, 23, 31} c) {2, 4, 7, 9, 10} h) {1, 3, 4, 6, 8, 12, 13, 15, 16} d) {1, 4, 5, 6, 9, 13} i) {3, 9, 13, 16, 28, 37} e) {5, 8, 9, 10, 12}

Separate each group of numbers into THREE smaller groups so that the sum of the numbers in each of the small groups is the same. NOTE: again, there may be more than one way to do a problem. If so, can you find the other ways?

a) {2, 3, 4, 8, 9, 10, 14, 17, 26} b) {4, 5, 6, 7, 8, 19, 21, 22, 28} c) {3, 4, 8, 9, 11, 15, 19} d) {2, 5, 7, 8, 11, 14, 15, 16} e) {1, 3, 4, 10, 12, 14, 15, 16, 17, 18, 23, 26} f) {4, 6, 7, 9, 12, 14, 17, 23 25} g) {1, 2, 4, 8, 11, 12, 15, 19, 36}

Make up a problem or two like these to share with your classmates. Just be careful that it does have at least one solution.

Teacher's Note: In problem set I there are two solution methods for two groups [d and i] and six solutions for group "h".

In problem set II groups a, b, f, and g have two solutions each, and group e has at least 13 (!) different ways to be solved.

tt(1/3/77)

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