Adding and Subtracting Decimals

When adding decimals with the same sign you.....

• subtract absolute values and take the sign of the larger number

• add the opposite

• add absolute values and keep the sign

• subtract absolute values and keep the sign

When adding decimals with different signs you....

• subtract absolute values and take the sign of the larger number

• add the opposite

• add and keep the sign

• subtract and keep the sign

2.98+5.3=

• 2.51
• 8.28
• 3.63
• 2.37

Tags

CCSS.6.NS.B.3

2 - 0.43 =

• 0.45
• 1.57
• 0.41
• 2.43

Tags

CCSS.5.NBT.B.7

Which value of the variable makes the equation true?
 $m\ +\ 4\ =\ -6.7$  

• m = 2.7
  

• m = -6.3

• m = 10.7

• m = -10.7

- 2.09 - 15.271

• -17.361

• 13.181

• 17.361

• -13.181

Which value of the variable makes the equation true?
 $-4.9\ =\ -5.7\ +\ x$  

• x = -.08
  

• x = 0.8

• x = 10.6

• x = -10.6

5.23 - (-9.1)

• -3.87

• 3.87

• 4.32

• 14.33

- 5.62 + (- 12.9)

• -6.91

• - 18.52

• 6.28

• 6.91

Rewrite the problem as addition.

-5.66 - (-4.1)

• 5.66 + (-4.1)

• -5.66 + 4.1

• -5.66 + (-4.1)

• -5.66 - 4.1

Tags

CCSS.7.NS.A.1C