Add Subtract Multiply Divide Rationals

The steps in solving 5b - 6 = 24 are: 

• Add 6 to both sides and divide both sides by 5

• Add 6 to both sides and multiply both sides by 5

• Subtract 6 from both sides then multiply both sides by 5

• Subtract 6 from both sides then divide both sides by 5

Fill in the blank for the following rule: If the rational numbers have same signs, ______________ the absolute values and keep the common sign.

• add

• subtract

• multiply

• divide

Fill in the blank for the following rule: If the rational numbers have different signs, ____________________ the absolute values and keep the sign of the number with the biggest absolute value.

• add

• subtract

• multiply

• divide

What is the value of (-115) + 23?

Match the following

• -10.35

• -4.7 + (-5.65)

• 3.4

• -3.18 + 8.02

• 4.84

• -3.8 + 7.2

What is the sum of 4 3/10 and (-6.2)? Express your answer as a decimal.

Mathematical Equivalence

ON

-7.79 + 5.4

Mathematical Equivalence

ON

Find the sum. (-4.8) + 2.1

Mathematical Equivalence

ON

The cards in Iman's hand had a value of 2.75, but then she added five −1.5 cards to her hand.  What is the new value of the cards in her hand?

Mathematical Equivalence

ON

34.5 + (-7) = (a)  

• -41.5

• 41.5

• -27.5

• 27.5