Grade 4 - Progress in Mathematics

Plan the steps to follow.

Step 1:Use the prices in the chart. Add to find the cost

of sending the packages by 4-day delivery.

3-lb cost 
4-lb cost total cost

Step 2:Subtract to find the difference.

2-day delivery 4-day delivery savings

Remember to check the computation in each step.

Visualize the facts of the problem as you reread it.

Facts: 1—3-lb package

2—4-lb packages

Question:How much money is saved

by using 4-day delivery?

Maria has 3 packages to send to

Hawaii in zone 8. One weighs 3 lb and

the others weigh 4 lb each. How much

money will she save if she uses 4-day

delivery instead of paying $13.40 for

using 2-day delivery?

Problem-Solving Strategy:

Use More Than One Step

6-13

Step 1:4-day delivery Step 2:savings

1 3 10

$ 4.0 5 $1 3.4 0

4.6 0 1 3.2 5


 4.6 0 $ .1 5

$1 3.2 5

Maria will save $ .15 by using 4-day delivery.

Weight Zone 8 Rates

(lb) 2-day 4-day

Delivery Delivery

1 $ 2.90 —

2 $ 2.90 $ 2.85

3 $ 4.10 $ 4.05

4 $ 4.65 $ 4.60

5 $ 5.45 $ 5.40

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