Grade 4 - Progress in Mathematics

Three-Digit Dividends

12-5

There are 158 people who want to

take a boat ride on the lake. How many

trips with 45 passengers can the tour

boat make? How many passengers

will be on the last trip?

To find how many trips, divide: 158 
45.

158 
 45

Think: 15 
 4 

Tr y 3.

?

3

4 5
 1  5  8



3

4 5
 1  5  8

1 3 5

3 R 23

4 5
 1  5  8

1 3 5

2 3

4 5

 3

1 3 5

 2 3

1 5 8

23  45

The tour boat can make 3 trips with 45 passengers.

There will be 23 passengers on the last trip.

Study these examples.

6 6 6

6 3
 3  7  8

3 7 8

3 7 0

Think

Estimate.

Divide the

ones.

Multiply. Subtract and

compare.

Check.

45 
 1  5  8  45  1 Not enough hundreds

45 
 1  5  8  45 15 Not enough tens

45 
 1  5  8  45  158 Enough ones

6 6 8 $ .0 5

3 3
 2  6  4 7 2
$ 3 .6 0

2 6 4 $  36 0

3 7 0 3 7 0

$ .0 7

5 8
$ 4 .0 6

 40 6

0

3.4

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