Mental Math Quiz Review

Which of the answers show the subtraction problem correctly rewritten as an addition problem?
−8 − 5

• 8 + 5
• 8 + (−5)
• −8 + 5
• −8 + (−5)

Tags

CCSS.7.NS.A.1B

Which of the answers show the subtraction problem correctly rewritten as an addition problem?
7 − 12

• 7 + 12
• 7 + (−12)
• −7 + 12
• −7 + (−12)

Tags

CCSS.7.NS.A.1B

Which of the answers show the subtraction problem correctly rewritten as an addition problem?
−8 − 5

• 8 + 5
• 8 + (−5)
• −8 + 5
• −8 + (−5)

Tags

CCSS.7.NS.A.1B

Which of the answers show the subtraction problem correctly rewritten as an addition problem?
7 − 12

• 7 + 12
• 7 + (−12)
• −7 + 12
• −7 + (−12)

Tags

CCSS.7.NS.A.1B

-9 + (-5)

• -14
• 14
• -4

Tags

CCSS.7.NS.A.1C

-2 - (-10) = ?

• -12
• 12
• 8
• -8

Tags

CCSS.7.NS.A.1C

What is ¹/₈ + ⁵/₈?

• 1
• ⁶/₁₆ or ³/₈
• ⁶/₈ or ³/₄
• ²/₄ or ¹/₂

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is ³/₄ + ¹/₄?

• 1

• ³/₄

• ⁵/₈

• ¹/₄

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

3/5 + 3/10

• 9/12

• 9/10

• 3/5

• 6/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

1/3 + 1/9

• 4/9

• 9/12

• 6/15

• 3/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2