## Thursday, September 10, 2009

### Math problem of the week: 7th grade Connected Math vs. 6th grade Singapore Math

I. From the first problem set in the 7th grade Connected Mathematics Accentuate The Negative booklet ("Investigation 1: Extending the Number Line"), p. 9:

1. Copy each pair of numbers below, inserting > or < to make a true statement.

a. 53 35
b. -50 0
c. -30 15
d. -70 -90

2. Order the numbers below from least to greatest.

25, 2, 5, -3, 15, -7, -25, 12, 1, -4, 0

II. From the first problem set of the 6th grade Singapore Math curriculum, Primary Mathematics 6A, ("Algebra"), p. 5:

1. A watermelon weighs m kg and a pineapple weighs 2 kg.
(a) Express the total weight of the fruits in terms of m.

(b) If m = 4, find the total weight of the fruits.

(c) If m = 6, find the total weight of the fruits.

2. Sumin bought a pen and a book for \$x. The pen cost \$5.
(a) Express the cost o the book in terms of x.

(b) If x = 11, find the cost of the book.

(c) If x = 15, find the cost of the book.

III. Extra Credit:

Order the two problem sets in order of: