CA 1 Quizziz Review

What is the result when 872 and 79 are multiplied?

• 13,542

• 13,952

• 64,178

• 68,888

Answer explanation

To find the product of 872 and 79, multiply them: 872 * 79 = 68,888. Therefore, the correct answer is 68,888.

What is the value of 8 + (4 ÷ 2) – 1?

• 5

• 7

• 9

• 12

Answer explanation

To solve 8 + (4 ÷ 2) – 1, first calculate 4 ÷ 2 = 2. Then, substitute back: 8 + 2 – 1 = 10 – 1 = 9. Thus, the correct answer is 9.

Which expression simplifies to 36?

• 4 × 5 – 2 × 8

• 4 × 5 + 2 × 3

• 4 × (5 – 2) × 3

• 4 × (5 + 2) × 8

Answer explanation

To simplify 4 × (5 – 2) × 3, first calculate (5 – 2) = 3. Then, 4 × 3 × 3 = 36. The other options do not equal 36 when simplified.

A numerical expression is evaluated as shown. 7 × (7 − 3) − 2 × 8 Step 1: (49 − 3) − 2 × 8 Step 2: 46 − 2 × 8 Step 3: 46 − 16 Step 4: 30 In which step does a mistake first appear?

• Step 1

• Step 2

• Step 3

• Step 4

Answer explanation

The mistake first appears in Step 1. The expression 7 × (7 − 3) should evaluate to 7 × 4, which is 28, not 49. Therefore, the correct evaluation should start from 28, leading to different results in subsequent steps.

Select TWO that are equivalent to nine and two hundred fifty-three thousandths.

• 9 + 2 × (1/1) + 5 × (1/10) + 3 × (1/100)

• 9.352

• 9.532

• 9 + 2 × (1/10) + 5 × (1/100) + 3 × (1/1,000)

• 9.253

Answer explanation

The expression '9 + 2 × (1/10) + 5 × (1/100) + 3 × (1/1,000)' simplifies to 9.253, which matches the decimal representation of nine and two hundred fifty-three thousandths.

Select TWO that are equivalent to 8.598.

• D. eight and five hundred ninety-eight hundredths

• E. eight and five hundred ninety-eight thousandths

• B. 8 + 5 \times \frac{1}{1,000} + 9 \times \frac{1}{100} + 8 \times \frac{1}{10}

• A. 8 + 5 \times \frac{1}{1} + 9 \times \frac{1}{10} + 8 \times \frac{1}{100}

• C. 8 + 5 \times \frac{1}{10} + 9 \times \frac{1}{100} + 8 \times \frac{1}{1,000}

Answer explanation

Choice D represents 8.598 as 'eight and five hundred ninety-eight hundredths'. Choice A calculates to 8 + 5 + 0.9 + 0.08 = 8.598, confirming both are equivalent to 8.598.

What is the value of the 9 in the number 16.295?

• A. Nine tenths

• B. Nine thousandths

• C. Nine hundredths

• D. Nine thousand

Answer explanation

In the number 16.295, the digit 9 is in the hundredths place, which represents nine hundredths (0.09). Therefore, the correct answer is C. Nine hundredths.

Which of these numbers has a 6 in both the tenths place and the hundredths place?

• A. 105.668

• B. 165.608

• C. 168.065

• D. 185.606

Answer explanation

The number 185.606 has a 6 in both the tenths place (first digit after the decimal) and the hundredths place (second digit after the decimal). The other options do not meet this criterion.

Megan collects stamps. She keeps her stamps in a book that can hold 16 stamps on each page. She has 98 pages full of stamps, and 14 pages that are only half full. The equation below can be used to find s, the number of stamps in Megan's book. s = (16 \times 98) + ((16 \div 2) \times 14) How many stamps does Megan have?

• A. 1,344

• B. 1,575

• C. 1,680

• D. 1,792

Answer explanation

Megan has 98 full pages with 16 stamps each, totaling 1568 stamps. The 14 half-full pages add 112 stamps (16/2 * 14). Thus, 1568 + 112 = 1680. Therefore, the correct answer is C. 1,680.

There are 77 boys and 112 girls in the fourth grade at Oakwood Elementary. All but 3 students are going to ride buses to the Alamo. The students split up evenly onto 6 buses. The equation below can be used to find s, the number of students on each bus. 77 + 112 - 3 = 6s How many students will be on each bus?

• A 12

• B 19

• C 25

• D 31

Answer explanation

First, calculate the total number of students: 77 + 112 - 3 = 186. Then, divide by the number of buses: 186 / 6 = 31. Therefore, there will be 31 students on each bus, which corresponds to choice D.