3-Digit Addition and Subtraction Review

Find the value of the sum. Be ready to explain or show your reasoning.

134 + 413

• 637

• 445

• 279

• 547

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Find the value of the sum. Be ready to explain or show your reasoning.

268 + 159

• 542

• 427

• 337

• 568

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Find the value of the difference. Be ready to explain or show your reasoning.

768 - 246

• 522

• 1,014

• 432

• 722

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Find the value of the sum. Be ready to explain or show your reasoning.

631 - 385

• 346

• 246

• 1,016

• 446

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Find the value of the expression. Be ready to explain or show your reasoning.

245 + 144

• 189

• 201

• 389

• 101

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Find the value of the expression. Be ready to explain or show your reasoning.

476 - 269

• 207

• 307

• 107

• 507

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What is the sum of 123 and 456?

• 579

• 580

• 581

• 582

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

A zoo has two new baby giraffes. The younger baby giraffe is a boy. The older baby giraffe is a girl. The girl giraffe weighs 625 lbs. The boy giraffe weighs about 580 lbs. How much do the two giraffes weigh? 

• 1,105 lbs

• 3,155 lbs 

• 1,385 lbs

• 1,205 lbs

Answer explanation

To find the total weight of the two giraffes, add their weights: 625 lbs (girl) + 580 lbs (boy) = 1,205 lbs. Therefore, the correct answer is 1,205 lbs.

Tags

CCSS.4.OA.A.3

1. There are 72 cookies in a box. There are 9 students who each take 3 cookies from the box. The number of cookies left in the box is c. 

3. Which equation represents the situation?

• 9 X c = 72 - 7

• 72 + (9 X 3) = c

• 72 - 9 = c

• c = 72 - (9 X 3)

Answer explanation

To find the number of cookies left, we subtract the total cookies taken (9 students x 3 cookies each) from the original 72 cookies. The correct equation is c = 72 - (9 x 3), which represents this situation accurately.

Tags

CCSS.HSA.CED.A.3

There are 96 balloons at a party. There are 8 children who each take 4 balloons from the collection. The number of balloons left is bb.

• b=96−(6×4)

• b=96−32

• b=96−(8×4)

• b=96−(8+4)

Answer explanation

Each of the 8 children takes 4 balloons, so the total number of balloons taken is 8×4. The correct calculation for the remaining balloons is b=96−(8×4).

Tags

CCSS.3.OA.A.3