STAAR Day 3 Review

Which model represents 0.9 x 0.4 = 0.36?

• Model F

• Model G

• Model H

• Model J

Answer explanation

Model H correctly represents the multiplication of 0.9 and 0.4, resulting in 0.36. It visually demonstrates the area model for this calculation, confirming that it is the right choice.

Which model represents 1.8 x 4?

• Model F

• Model G

• Model H

• Model J

Answer explanation

Model H correctly represents 1.8 x 4, as it visually demonstrates the multiplication of these two numbers, showing the area or product clearly. The other models do not accurately depict this calculation.

What is the value of 1.5 × 1.12?

• 1.68

• 1.06

• 10.6

• 16.8

Answer explanation

To find the value of 1.5 × 1.12, multiply the two numbers: 1.5 × 1.12 = 1.68. Therefore, the correct answer is 1.68.

Kelsi spends $6.75 every Saturday for breakfast. What is the total amount of money Kelsi spends on breakfast for 14 Saturdays?

• $94.50

• $20.75

• $92.30

• $33.75

Answer explanation

Kelsi spends $6.75 each Saturday. For 14 Saturdays, the total is 6.75 x 14 = $94.50. Therefore, the correct answer is $94.50.

Mr. Nolan paid $36.95 for each adult shirt and $23.95 for each youth shirt he bought. Mr. Nolan bought 2 adult shirts and 5 youth shirts. How much money did he spend on these shirts?

• $167.35

• $258.65

• $232.65

• $193.65

An electronic book has a file size of 2.4 megabytes. What is the file size in megabytes of 16 of these electronic books?

• 32.4 megabytes

• 54.4 megabytes

• 32.64 megabytes

• 38.4 megabytes

Mia’s dog weighs 32.6 pounds. Lettie’s dog weighs 3.8 times as much as Mia’s dog. What does Lettie’s dog weigh in pounds?

• 36.40 lb

• 12.388 lb

• 96.48 lb

• 123.88 lb

Scott drank 3.5 bottles of water yesterday. Each bottle contained 1.2 pints of water. What was the number of pints of water Scott drank yesterday?

• 4.7 pints

• 4.2 pints

• 4.1 pints

• 42 pints

Denise spent $3.45 on snacks every day for 11 days. What is the amount of money Denise spent on these snacks?

• $379.50

• $14.45

• $37.95

• $6.90

Answer explanation

Denise spent $3.45 per day for 11 days. To find the total, multiply: 3.45 * 11 = 37.95. Therefore, the correct answer is $37.95.

Which hundredths model best represents the situation where a person has $1.20 in pennies and makes 4 equal stacks, with the equation 1.20 ÷ 4 = 0.30 showing the value of each stack in dollars?

• Model A

• Model B

• Model C

• Model D

Answer explanation

Model B best represents the situation as it visually divides $1.20 into 4 equal stacks of $0.30 each, aligning with the equation 1.20 ÷ 4 = 0.30. This model accurately illustrates the distribution of the total amount.