Vocab
Mental Math
Estimating
Adding 3 digit numbers
Adding 4 digit numbers
100

The property that says any number plus 0 is that number.

Identity Property of Addition

100

What is 10 more than 140?

150

100

Round 203 to the nearest 10

200

100

What is 435 + 334?

769

100

What is 5,331 + 3,442?

8,773

200

The property that says that no matter what order you add 2 numbers, the sum remains the same.

Communitive Property 

200

What is 1000 more than 4,249?

5,249

200

What is 4,389 rounded to the closest 100?

4,400

200

What is 338 + 229?

 567

200

What is 5,398 + 3,849

9,247

300

When you rename a number using place value. 

regroup

300

What is 100 more than 2,554?

2,654

300

Estimate 434 + 434 to the nearest 10

860

300

What is 876 + 987?

1,863

300

Weston has 4,590 pennies and Blaze has 3,231 pennies. How many do they have all together?

7,821

400

The property that says no matter how you group numbers, the sum will be same. 

Associative Property

400

What is 299 + 54?

353

400

Estimate 5,335 + 3,445 to the nearest 100

8,700

400

Sam ran 329 miles and Lincoln ran 455 miles. How many miles did they run all together?

784

400
Sarah Frances read 3,302 pages and Ava read 4,211 pages. How many did they read all together?

7,513

500
A number close to the exact number.

estimate

500

What is 443 + 221?

664

500

Mrs. Teesdale wondered if she had enough candy for her class over the next 3 weeks. She has 53 pieces. Will she have enough to give 1 to each student each week?

Yes

500
Audrey has 530 balloons, Ada has 488 balloons, and McKinley has 422 balloons. How many do they have all together?

1,440

500

Vivian traveled 5,339 miles last summer and Olivia traveled 2,492 miles last summer. About how many miles did they travel all together?

7,800