Illustrative Mathematics Unit 5 Rational Number Arithmetic

Rounded to two decimals,

1/11= .09

3/11=.27

What is 9/11?

Will the solution to this problem be positive or negative?

58 + -72

• positive

• negative

976 - (-731)

The solution to this problem will be...

• positive

• negative

-16.5 + 10.75

The solution to this problem will be ...

• positive

• negative

• 5/6

• -5/6

• 6 ½

• -6 ½

Sharon wants to make cookies for her class bake sale. She found a recipe that calls for 2/3 cups of flour for each batch of cookies. How many batches can she make using 12 cups of flour?

• 12

• 18

• 6

• 4

Jerry's account balance is -$32.63. How much does he need to pay to get rid of his debt?

Rounded to two decimals, 1/9 = .11. What is 4/9?

• 1/6

• 2/5

Mr. Howard lost money on his investments at a rate of $7 per day. What is the change in his investment at the end of a week?

• -$49.00

• $49.00

• $14.00

• -$14.00