Decompose
Three-Digit
Word Problems
Four-Digit
Estimate
100

How can you decompose the number in two ways?

582

500 + 80 + 2

500 + 70 + 12

100

449 + 352 = ?

801

100

A bakery sold 345 cupcakes on Saturday and 280 cupcakes on Sunday. How many cupcakes did they sell in total over the weekend?

625 cupcakes

100

1,238 + 1,431 = ?

2,669

100

What is 132 rounded to the nearest ten?

130

200

How can you decompose the number in two ways?

253

200 + 50 + 3

100 + 150 + 3


200

What is the difference?

749 - 303

446

200

A puzzle has 750 pieces. Clara has put together 429 pieces so far. How many pieces does she have left to finish the puzzle?

321 pieces

200

3,874 - 1,723 = ?

2,151

200

Round 562 to the nearest 100. 

600
300

What number is this?

3,000 + 250 + 3

2,253

300

Find the sum

438 + 399

837

300

A local library has 4,280 English books and 3,975 Spanish books. How many books are in the library all together?

8,255 books

300

What is the difference of 4,328 and 2,894?

1,434

300

True or False:
528 - 90 is about 500

False

400

How can you decompose the number in two ways?

1,916

1,000 + 900 + 10 + 6

1,000 + 900 + 16

400

754 + 283 = ?

1,037

400

A stadium can hold 9,000 people. If 6,432 tickets are already sold, how many more tickets need to be sold to fill the stadium?

2,568 tickets

400

An expression is shown. 

5,067 - 4,990.

What is the value of the expression?

77

400

True or False:

722 - 311 is about 400. 

True

500

What number is this?

4,000 + 300 + 26

4,326

500

498 + 498 = ?

996

500

A tech store ordered 5,500 smartphones. In the morning, they sold 1,420 phones. In the afternoon, they sold another 2,150 phones. How many smartphones does the store have left?

1,930 phones left

500

Find the sum.

5,329 + 3,879

9,208

500

True or False: 

689 - 329 is about 400.

True