6th Grade Consumer Math Quiz

Liz has 11 coins, all of which are quarters and pennies. In all, they're worth $2.27. How many of each kind of coin does Liz have?

• 2 quarters and 9 pennies

• 10 quarters and 1 penny

• 5 quarters and 6 pennies

• 9 quarters and 2 pennies

Answer explanation

9(0.25) + 2(0.01) = 2.27

Kimi went back-to-school shopping and spent $118.14 on shirts. Then she spent $110.77 on pants. How much did Kimi spend in all? (2 points)

Answer explanation

118.14 + 110.77 = 228.91

If an apple costs $0.31, how much would 22 apples cost? (2 points)

Answer explanation

$0.31 * 22 = $6.82

Nora bought 28 globes that each cost the same amount. The total cost was $566.16. What was the price of each globe? (2 points)

Answer explanation

$566.16 / 28 = $20.22

Which coupon should Luke use to save the most money on a television originally priced at $160?

• A: $25 off purchases of $150 or more

• B: 15% off any one item

• Both coupons are the same

• The coupons don't reduce the price.

Answer explanation

A: 160 - 25 = 135

B: 160 - (0.15*160) = 136

A is cheaper

Which is a better buy?

• 8-pack of ice cream sandwiches for $3.93

• 9-pack of ice cream sandwiches for $4.57

• They are the same price

• Not enough information

Answer explanation

3.93 / 8 = 0.49

4.57 / 9 = 0.51

Which is a better buy? There are 16 fluid ounces in 1 pint

• 12-fluid ounce bottle of wood polish for $5.40

• 2-pint bottle of wood polish for $$18.56

• They cost the same

• Not enough information

Answer explanation

$5.40 / 12 fl-oz = 0.45 $/oz

($18.56 / 2 pint) * (1 pint / 16fl-oz) = 0.58 $/oz

Dan buys a pineapple upside-down cake during a 15% off sale. If the original price was $17.80, how much does Dan pay? (3 points)

Answer explanation

$17.80 - ($17.80 * 0.15) = $15.13

OR

$17.80 * (1 - 0.15)

$17.80 * (0.85) = $15.13

Vince bought a grandfather clock priced at $178.50. Shipping and handling cost an additional 10% of the price. What was the total cost of the grandfather clock, including shipping and handling? (3 points)

Answer explanation

$178.50 + ($178.50 * 0.10) = $196.35

OR

$178.50 * (1 + 0.10) =

$178.50 * 1.1 = $196.35

Steve buys a box of lemon cookies during a 65% off sale. If Steve pays $1.47, what was the original price? (4 points)

Answer explanation

$1.47 = x * (1 - 0.65)

$1.47 = x * 0.35

$1.47 / 0.35 = x

$4.20 = x