Standard, Written and Expanded Form
Addition
Subtraction
Rounding
Estimating
100

What is 64 written in expanded and written form 

60 + 4, sixty four 

100

432 + 526

958

100

526-412=

114

100

What is 37 rounded to the nearest 10 

40

100

Estimate: 62 - 31

About 30 

200

What is 381 written in expanded and written form 

300 + 80 + 1, three hundred eighty one

200

789 + 473

1,262

200
872 - 624 = 

248

200

What is 791 rounded to the nearest hundred

800

200

Estimate 46 + 32

About 80 

300

What is 5,948 written in expanded and written form

5,000 + 900 + 40 + 8, five thousand, nine hundred forty eight

300

4,589 + 9,214 

13,803

300

9,319 - 4,491 =

4,828

300

What is 456 rounded to the nearest 10 

460

300

Estimate 725 + 203

About 900

400

What is 67,493 written in expanded and written form

60,000 + 70,000 + 400 + 90 + 3, sixty seven thousand, four hundred ninety three 

400

47,492 + 12,874

60,366

400

67,921 - 23, 914

44,007

400

What is 6,473 rounded to the nearest thousand 

6,000

400

Estimate 9,414 - 4,842

About 4,000 

500

What is 674,941 written in expanded and written form

600,000 + 70,000 + 4,000 + 900 + 40 + 1 and six hundred seventy four thousand, nine hundred forty one 

500

193,382 + 621,412 

814,794

500

847,321 - 621,173

226,148

500

What is 34,941 rounded to the nearest thousand

35,000

500

Estimate 24,481 + 72,489

About 90,000