Rounding
Addition
Subtraction
Problem Solving
Review
100

What is 23 rounded to the nearest 10?

20

100

Add

27 + 56

83

100

875 - 421

454

100

Mr. Campbell bought a new kickball for the school.  It cost $11.50.  If he paid with $20.00, how much change did he get?

$8.50

100

Write 256 in expanded form.

200 + 50 + 6=256

200

What is 146 rounded to the nearest 100?

100

200

Add 345 + 406

751

200

213 - 89

124

200

Mrs. Steuerwald is trying to read 1,000 books this year.  Right now she has read 823 books.  How many more does she need to read before the end of the year?

177 books

200

What is the value of the italicized digit?

4,986

80

300

What is 3, 678 rounded to the nearest 1,000?

4,000

300

Add 1,245 + 5,892

7,137

300

1,975 - 486

1,489

300

Mrs. Dresko's 3 sons each scored 12 points at their football games last weekend.  How many points did they score altogether?

36 points

300

4,000 + 50 + 6 equals what number?

4,056

400

What is 12, 898 rounded to the nearest 1,000?

13,000

400

Use rounding to estimate the sum.  Then add.

2,506 + 3,188

estimate: 6,000

actual 5,694

400

502 - 318

184

400

Mr. Seekamp made $25.00 in tips Saturday from driving a limo and $35.00 Sunday.  How much did he make in tips?

$60.00

400

Write the number in standard form: ten thousand, twenty-one

10,021

500

What is 54,206 rounded to the nearest hundred?

54,200

500

Add 1,764 + 346

2,110

500
Use rounding to estimate the difference. Then find the actual.


3,702 - 1, 089

estimate: 3,000

actual:  2,613

500

Mrs. Larsen went shopping last weekend and bought 22 new pencil boxes for her classroom.  If she needs 40 pencil boxes, how many more does she need to buy?

18 boxes

500

What number is 2 hundreds and 18 ones?

218