Grade 3 Math Practice Test: Addition and Subtraction Within 1,000
- Addition and Subtraction Within 1,000
- 10 questions
- 12 minutes
This test practices adding and subtracting numbers up to 1,000, including problems where you must regroup. Tip: line up the ones, tens and hundreds, and start with the ones column.
Tap an option to mark your answer. You can change your mind, or tap the same option again to leave the question blank. The correct answers and explanations appear when you finish the test.Tap an option to answer; tap it again to leave the question blank.
Your result
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- 0 wrong
- 0 blank
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Question 1
What is 345 + 238?
Correct answer: C
5 + 8 = 13, so write 3 and regroup 1 ten. Then 4 + 3 + 1 = 8 tens and 3 + 2 = 5 hundreds, giving 583. 573 forgets the regrouped ten.
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Question 2
What is 702 - 368?
Correct answer: A
Regroup from the hundreds because there are 0 tens: 702 = 6 hundreds, 9 tens and 12 ones. 12 - 8 = 4, 9 - 6 = 3 and 6 - 3 = 3, so the answer is 334. 466 comes from subtracting the smaller digit from the larger digit in each column.
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Question 3
A library had 615 books. It received 289 more books. How many books does the library have now?
Correct answer: D
615 + 289 = 904, with regrouping in both the ones and the tens. 326 is the difference, but "received more" means add.
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Question 4
What number makes this equation true?
450 + ☐ = 730Correct answer: B
The missing number is 730 - 450 = 280. Check: 450 + 280 = 730. 1,180 comes from adding 450 and 730.
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Question 5
A farmer picked 512 apples and sold 247 of them. How many apples does the farmer have left?
Correct answer: D
512 - 247 = 265. 335 comes from subtracting the smaller digit from the larger one in each column instead of regrouping.
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Question 6
What is 199 + 456?
Correct answer: B
A quick way: 199 is 1 less than 200, so 200 + 456 = 656 and then 656 - 1 = 655. 645 forgets one regrouped ten.
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Question 7
A family drove 186 miles on Monday, 207 miles on Tuesday and 145 miles on Wednesday. How many miles did they drive in all?
Correct answer: A
186 + 207 = 393, and 393 + 145 = 538. 438 forgets to regroup into the hundreds place.
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Question 8
What is 800 - 462?
Correct answer: C
800 - 462 = 338. Check by adding: 338 + 462 = 800. 348 forgets that a ten was taken away when regrouping.
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Question 9
Sam scored 734 points in a game. Lena scored 589 points. How many more points did Sam score than Lena?
Correct answer: B
734 - 589 = 145. Check: 589 + 145 = 734. 1,323 is the total of both scores, not the difference.
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Question 10
Which equation is true?
Correct answer: A
8 + 7 = 15, so write 5 and regroup; 6 + 9 + 1 = 16, so write 6 and regroup; 3 + 2 + 1 = 6. The sum is 665. 565 forgets the last regrouped hundred.
Questions you leave blank are not counted as wrong.
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