Corrections To The 3 Questions

1. Annie has been asked to calculate 1.7 + 6 ÷ 2 .She claims the answer is 3.85.Do you agree? explain why or why not?

No the answer is 4.7 because :

1.7 + 6 ÷ 2 =

6 ÷ 2 = 3

3 + 1.7 = 4.7

She got 3.85 because she didn't use BEDMAS.She did it this way:

1.7 + 6 = 7.7

7.7 ÷ 2 = 3.85

2.Put brackets in the following expression to get the largest value possible .What problem solving strategy did you use?

3 × 2.8 + 6.4 ÷ 4 =

Well I would put the brackets between 3 × 2.8. I put brackets on all the possible pairs (3 × 2.8, 2.8 + 6.4, and 6.4 ÷ 4) and use BEDMAS to figure out the answer ,and when you put the brackets between 3× 2.8 you will get the largest answer.

3.Create a problem that could be solved using the following expression.

2.5 + 1.25 + 5 × 1.6

Emily held a baked sale at her school, her principal bought one of her cookie for $ 2.50.Her math teacher bought one brownie for $1.25 and 5 of her friends came to the bake sale and all 5 of them bought a cupcake for $1.60. At the end of the day Emily had raised $11.75.