Grade 4 - Progress in Mathematics

Yo u are separating, or taking aw ay, from a set.

Subtract the number of pairs ordered from

the number of pairs in stock: 1000
487.

Yo u do not need to know the

price range to solve the problem.

The answer is close to the estimate.

It is reasonable.

Add to check subtraction. 513  487  1000

Visualize the facts of the problem as you reread it.

Facts: 487 pairs ordered

1000 pairs in stock at the factory

Pairs cost $ 30 to $ 85.

Question: How many pairs will be left

after the order is filled?

The Keep Fit Shop ordered 487 pairs of high-tops.

The factory has 1000 pairs in stock. The prices

range from $ 30 to $ 85. How many pairs

of high-tops will the factory have

after they fill the order?

Problem-Solving Strategy:

Choose the Operation

3-11

Round to estimate the difference.

1000 
 500  500

Then subtract.

The factory will have 513 pairs of high-tops left.

0 9 9 10

1 0 0 0


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