Year 9 - Addition and Subtraction of Decimals

What is the best estimate for the answer to 
7.82 + 31.23

• 30
• 39
• 0.39
• 100

What is the best estimate for the difference of 
33 - 10.23

• 10
• 200
• 23
• 9

Tags

CCSS.5.NBT.A.4

CCSS.5.NBT.B.7

Add.
5.37 + 16.45

• 21.82
• 70.15
• 21
• 16.987

Tags

CCSS.6.NS.B.3

Add. 
7 + 5.826

• 5.833
• 6.526
• 75.826
• 12.826

Tags

CCSS.6.NS.B.3

Add.
-5.62 + (-12.9)

• 18.52
• -18.52
• -17.52
• 6.91

Tags

CCSS.7.NS.A.1C

Subtract. 
7.89 - 5.91

• 2.02
• 2.08
• 1.98
• 1.88

Tags

CCSS.6.NS.B.3

Subtract.
17 - 4.12

• 2.32
• 4.05
• 13.12
• 12.88

Tags

CCSS.6.NS.B.3

Subtract. 
9.85 - 41

• -31.15
• 31.15
• 9.43
• -50.85

Tags

CCSS.7.NS.A.1C

4.01 - 2.95 = 

• 2.06
• 1.06
• 6.96
• 1.96

Tags

CCSS.6.NS.B.3

5.9 + 2.7 =

• 7.6
• 8.5
• 8.6
• 7.7

Tags

CCSS.6.NS.B.3