Adding and Subtracting Positive and Negative Rational Number Operations

When adding or subtracting rational numbers, what must you have?

• Common Numerator

• Quick Answering Skills

• Common Numbers

• Common Denominators

Tags

CCSS.7.NS.A.1C

When adding or subtracting RATIONAL NUMBERS with LIKE DENOMINATOR denominator you should

• multiply the denominators

• add or subtract the numerators

• keep the denominator

• simplify if need

Tags

CCSS.7.NS.A.1C

Evaluate:  -19 -10

• 9

• -9

• -29

• 29

Tags

CCSS.7.NS.A.1C

−28+(−8)=

• 36

• −36

• −20

• 20

Tags

CCSS.7.NS.A.1C

34.5 + (-7) = (a)  

• -41.5

• 41.5

• -27.5

• 27.5

Tags

CCSS.7.NS.A.1C

Find the sum. (-4.8) + 2.1

Mathematical Equivalence

ON

Tags

CCSS.7.NS.A.1C

-7.79 + 5.4

Mathematical Equivalence

ON

Tags

CCSS.7.NS.A.1C

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

Mathematical Equivalence

ON

Tags

CCSS.7.NS.A.1C

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

Tags

CCSS.7.NS.A.1C

Match the following

• 4.84

• -3.8 + 7.2

• 3.4

• -4.7 + (-5.65)

• -10.35

• -3.18 + 8.02

Tags

CCSS.7.NS.A.1C