Unit 3 Skill Check 1 Review

Each month Mrs. Jones pays $29.99 for her water bill. So far she has spent $119.96 this year. What is the best estimate on how many months Mrs. Jones has paid for water this month?

• 2 months

• 4 months

• 6 months

• 8 months

Answer explanation

Round $119.95 to $120

Round $29.99 to $30

$120 / $30 = 4

Answer: 4 months

A gumball machine holds 7,488 gumballs. You can fill a candy bag with 96 gumballs. How many candy bags can be filled by the gumball machine?

• 49

• 63

• 78

• 84

Mario buys 7 packs of Dr. Pepper for $3.98 each. What is the total amount he spends on Dr. Pepper?

• $24.64

• $25.66

• $25.86

• $27.86

A classroom has an area of 342 square feet. The width of the room is 19 ft and is in the shape of a rectangle. What is the length of the room?

• 18 ft

• 20 ft

• 22 ft

• 24 ft

Answer explanation

Area = L x W

We know...

A = 342 sq ft

W = 19 ft

We don't know...

L = ?

342 = L x 19

Therefore we divide 342 by 19 to solve for L.

342 divided by 19 = 18

Rishabh collects stamps. He has 35 stamps that are 4.6 mm long. What is the total length of all the stamps?

• 161

• 16.1

• 121

• 12.1

513 students wanted to play volleyball at recess so a teacher divided them into smaller groups. Each group had 19 students. How many groups are there?

• 27

• 28

• 37

• 38

Answer explanation

Use the GET strategy

G = groups

E = in each group

T = total

G = ?

E = 19

T = 513

513 divided by 19 = 27

Sebastian had 32 Pokémon cards. He lost 7 cards at recess. He divided the remaining cards into 5 stacks. Which equation can be used to find x, the number of cards in each stack?

• X = (32 - 7) ÷ 5

• (32 - 7)5 = X

• 5(32 + 7) = X

• X = (32 + 7) ÷ 5

Answer explanation

32 cards = total

subtract the 7 lost cards

then ÷ 5

A dice is .6 inches long and a marble is 25/100 inches long. How much longer is the dice than the marble?

• 0.85

• 0.53

• 0.25

• 0.35

Answer explanation

0.60

- 0.25

=0.35