Unit 3 Assessment: Adding and Subtracting within 1000

Solve 323+464=________

Draw your base 10 blocks to solve.

Hint: Draw both numbers.

• 788

• 656

• 787

• 788

Tags

CCSS.2.NBT.B.7

Solve 676+221=________

Draw your base 10 blocks to solve.

Hint: Draw both numbers.

Tags

CCSS.2.NBT.B.7

Solve 451+239=__________

Draw your base 10 blocks to solve.

Hint: Draw both numbers.

Tags

CCSS.2.NBT.B.7

Alex has 425 marbles in her colelction. Her brother buys her 186 more marbles. How many marbles does she have total?

Explain in words how you found your answer

Type the ANSWER. Then explain in words how you solved this problem step-by-step.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Solve 357-242=______

Draw your base 10 blocks to solve.

Hint: Only draw the whole.

• 218

• 245

• 116

• 115

Tags

CCSS.2.NBT.B.7

Solve 459-319=_______

Draw your base 10 blocks to solve.

Hint: Only draw the whole.

Tags

CCSS.2.NBT.B.7

Solve 615-374=________

Draw your base 10 blocks to solve.

Hint: Only draw the whole.

Tags

CCSS.2.NBT.B.7

Kim was solving the problem: 451-239. She got the answer 228. Is she correct? Why or why not?

Type the ANSWER. Then explain why she is correct or why she is incorrect.

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Solve 42+55+37+21=______

Drawall numbers with base 10 blocks to solve.

• 126

• 155

• 156

• 231

Tags

CCSS.2.NBT.B.7

Solve 52+25+31+47=______

Draw all the numbers using base 10 blocks to solve.

Tags

CCSS.2.NBT.B.7