Adding Subtracting Rational Numbers

At beginning of the summer, the water level of a pond is 2 ⅚ ft. below its normal level. After an unusually dry summer, the water level of the pond dropped another 1 ⅓ ft. Write and an expression to model the water’s current level relative to its normal level.

• -2 ⅚ + 1 ⅓

• 2 ⅚ + (-1 ⅓)

• 2 ⅚ - (-1 ⅓)

• (-2 ⅚) + (-1 ⅓)

Tags

CCSS.7.NS.A.1C

At beginning of the summer, the water level of a pond is 2 ⅚ ft. below its normal level. After an unusually dry summer, the water level of the pond dropped another 1 ⅓ ft. Evaluate an expression to model the water’s current level relative to its normal level.

• 4 1/6 ft. below normal

• 4 1/3 ft. below normal

• 4 2/9 ft. below normal

• 4 1/9 ft. below normal

Tags

CCSS.7.NS.A.1C

-14 + (-3)

• -17

• 11

• -11

• 17

Tags

CCSS.7.NS.A.1C

33 + (-38)

• -5

• 5

• 71

• -71

Tags

CCSS.7.NS.A.1C

⅗+(−⅕)=

• ⅖

• −⅖

• ⅘

Tags

CCSS.7.NS.A.1C

-1 1/4  + -2 1/2 =  

• - 3 3/4

• - 3 1/4

• -2 3/4

• -3 1/2

Tags

CCSS.7.NS.A.1C

6  3/4 -  -2  4/5=

• 9  11/20

• -9  11/20

• 4  11/20

• -4  11/20

Tags

CCSS.7.NS.A.1C

-2  1/4 - (-8  2/5)

• 6  3/20

• 7

• 10  3/9

• not listed

Tags

CCSS.7.NS.A.1C

Make sure your final answer is in simplest form!

• -5/3

• -10/12

• 0

Tags

CCSS.7.NS.A.1C

• $5.10
• $7.40
• $14.90
• $20.10

Tags

CCSS.6.NS.B.3