Showing posts with label homework page 20-21. Show all posts
Showing posts with label homework page 20-21. Show all posts

Wednesday, November 3, 2010

Homework for page 20-21 question number 1-4

1.Estimate 6.6 divided by 2.3

6 divided by 2 = 3 > The answer e.) Front- end estimation

Front-end estimation is the highest place value when estimating. 

2. (The picture shown in the booklet) Estimate 6.6 divided by 2 = 3

                      6 divided by 2 = 3 underestimate

                       8 divided by 2 = 4 overestimate 

The answer is a.) Number line estimation

Number line estimation is when you use number line on estimating.

3. [C] 25.73 [ divided by] 3.1 [=] 8.3

24 divided by 3 = 8

27 divided by 3= 9

The estimate suggest an answer between 8 and 9. The answer 8.3 is reasonable.

The answer is b.) Estimate, then use a calculator

4. Divide 20.4 divided by 3.

(The picture shown in the booklet) <3>

                                                              <3>

21 divided by 3 = 7

The answer is around 7. The decimal point goes between the 6 and 8.

The answer for this question is c.) Divided as whole numbers, then estimate to place the decimal