Thursday, October 9, 2008

Math problems of the week: 2nd grade Investigations vs. Singapore Math

1. From one month into the 2nd grade Investigations curriculum, Coins, Coupons, and Combinations, "What Will You Need" worksheet:


1. Complete each sentence.

1. If I have 4, I will need ____ to make 10.
2. If I have 6, I will need ____ to make 10.
3. If I have 3, I will need ____ to make 10.
4. If I have 7, I will need ____ to make 10.
5. If I have 2, I will need ____ to make 10.
6. If I have 8, I will need ____ to make 10.
7. If I have 1, I will need ____ to make 10.
8. If I have 9, I will need ____ to make 10.
9. If I have 5, I will need ____ to make 10.
10. If I have 0, I will need ____ to make 10.

2. From one month into the 2nd grade Singapore Math curriculum: Primary Mathematics 2a, p. 40:

1. Add:

   648         436    700
+ 201 + 231 + 135




   540    625    213
+ 249 + 173 + 153




   107    445    657
+ 381 + 124 + 330




3. Extra Credit:

A generation from now, which country will be most able to extricate itself from a financial crisis?