Grade 2 Regrouping Practice Test

Correct answer: A

The correct answer is 65 pencils.

1. Check the ones: See whether the ones can be added or subtracted without changing the tens.
2. Regroup if needed: Add 9 + 6 = 15, regroup 1 ten, then 2 + 3 + 1 = 6 tens. There are 65 pencils.
3. Check the answer: The correct choice is 65 pencils.

Correct answer: B

The correct answer is 36 books.

1. Check the ones: See whether the ones can be added or subtracted without changing the tens.
2. Regroup if needed: Trade 1 ten for 10 ones: 13 - 7 = 6, then 7 - 4 = 3. There are 36 books left.
3. Check the answer: The correct choice is 36 books.

Correct answer: C

The correct answer is 85 blocks.

1. Check the ones: See whether the ones can be added or subtracted without changing the tens.
2. Regroup if needed: Add 7 + 8 = 15, regroup 1 ten, then 5 + 2 + 1 = 8 tens. There are 85 blocks.
3. Check the answer: The correct choice is 85 blocks.

Correct answer: D

The correct answer is 24 balloons.

1. Check the ones: See whether the ones can be added or subtracted without changing the tens.
2. Regroup if needed: Trade 1 ten for 10 ones: 12 - 8 = 4, then 8 - 6 = 2. There are 24 balloons left.
3. Check the answer: The correct choice is 24 balloons.

Correct answer: A

The correct answer is 84.

1. Check the ones: See whether the ones can be added or subtracted without changing the tens.
2. Regroup if needed: Add 6 + 8 = 14, regroup 1 ten, then 4 + 3 + 1 = 8 tens. The sum is 84.
3. Check the answer: The correct choice is 84.

Correct answer: B

The correct answer is 26.

1. Check the ones: See whether the ones can be added or subtracted without changing the tens.
2. Regroup if needed: Trade 1 ten for 10 ones: 11 - 5 = 6, then 6 - 4 = 2. The difference is 26.
3. Check the answer: The correct choice is 26.

Correct answer: C

The correct answer is 95.

1. Check the ones: See whether the ones can be added or subtracted without changing the tens.
2. Regroup if needed: Add 8 + 7 = 15, regroup 1 ten, then 6 + 2 + 1 = 9 tens. The sum is 95.
3. Check the answer: The correct choice is 95.

Correct answer: D

The correct answer is 31.

1. Check the ones: See whether the ones can be added or subtracted without changing the tens.
2. Regroup if needed: Trade 1 ten for 10 ones: 10 - 9 = 1, then 5 - 2 = 3. The difference is 31.
3. Check the answer: The correct choice is 31.

Correct answer: A

The correct answer is 93.

1. Check the ones: See whether the ones can be added or subtracted without changing the tens.
2. Regroup if needed: Add 7 + 6 = 13, regroup 1 ten, then 3 + 5 + 1 = 9 tens. The sum is 93.
3. Check the answer: The correct choice is 93.

Correct answer: B

The correct answer is 16.

1. Check the ones: See whether the ones can be added or subtracted without changing the tens.
2. Regroup if needed: Trade 1 ten for 10 ones: 15 - 9 = 6, then 7 - 6 = 1. The difference is 16.
3. Check the answer: The correct choice is 16.