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Add and subtract 3-digit whole numbers · Grade 3 · B2.1

Name: ______________________

Date: ______________________

1
183 + 303 = ?
Warm-up
Answer:
2
396 + 258 = ?
Warm-up
Answer:
3
199 + 386 = ?
Warm-up
Answer:
4
840 − 238 = ?
On level
Answer:
5
519 − 195 = ?
On level
Answer:
6
898 − 268 = ?
On level
Answer:
7
775 + 483 = ?
Challenge
Answer:
8
475 + 792 = ?
Challenge
Answer:
9
755 + 520 = ?
Challenge
Answer:

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Worksheet code: eyJzIjoibnVtYmVyLWFkZC1zdWJ0cmFjdC0zZGlnaXQiLCJkIjpbMjAwMDI3NjE5LDEyMTg5MTAxMDksMzk5NjA1NjczLDUyNzI2NzcxMSwxNzEzNzAzNjQ0LDE2NjM3NDk2ODMsOTc3MDc5MTY1LDQ3MDkzMTg0OSwxMjU5NTYwNjY1XSwidiI6MX0.6013b9897889

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Answer key · Add and subtract 3-digit whole numbers

1.
486 — Add the hundreds, tens, and ones: 183 + 303 = 486.
2.
654 — Add the hundreds, tens, and ones: 396 + 258 = 654.
3.
585 — Add the hundreds, tens, and ones: 199 + 386 = 585.
4.
602 — Subtract 238 from 840 to get 602.
5.
324 — Subtract 195 from 519 to get 324.
6.
630 — Subtract 268 from 898 to get 630.
7.
1258 — Line up the digits and regroup as you add: 775 + 483 = 1258.
8.
1267 — Line up the digits and regroup as you add: 475 + 792 = 1267.
9.
1275 — Line up the digits and regroup as you add: 755 + 520 = 1275.