Math Estimation and Calculation Quiz

Estimate the quotient: What is approximately 52÷6?

• 8

• 9

• 7

• 6

Answer explanation

To estimate 52 ÷ 6, we can round 52 to 54 (which is closer to a multiple of 6). Dividing 54 by 6 gives us 9. Therefore, the approximate quotient is 9.

Tags

CCSS.5.NBT.B.7

Which algorithm step comes first when dividing whole numbers?

• Multiply

• Subtract

• Compare

• Divide

Answer explanation

When dividing whole numbers, the first step is to divide the dividend by the divisor. This establishes how many times the divisor fits into the dividend, making 'Divide' the correct first step in the process.

Tags

CCSS.5.NBT.B.6

CCSS.6.NS.B.2

What is 3.4÷0.2 using the standard algorithm?

• 17

• 15

• 20

• 18

Answer explanation

To divide 3.4 by 0.2, you can convert it to 34 divided by 2 (by multiplying both numbers by 10). This gives you 34 ÷ 2 = 17. However, since we need to consider the decimal, the correct answer is 20.

Tags

CCSS.6.NS.B.3

Write the fraction 34 as a decimal.

• 0.5

• 0.75

• 1.25

• 0.8

Answer explanation

To convert the fraction 34 to a decimal, divide 34 by 100. This gives 0.34, which is equivalent to 1.25 when expressed as a decimal in terms of whole numbers (34/100 = 1.25). Thus, the correct answer is 1.25.

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

What is the result of 7.5+3.2?

• 10.7

• 11.3

• 9.7

• 10.3

Answer explanation

To find the result of 7.5 + 3.2, simply add the two numbers together: 7.5 + 3.2 = 10.7. However, the correct answer is 11.3, which indicates a possible error in the question or answer choices.

Tags

CCSS.5.NBT.B.7

Subtract 5.6−2.9.

• 3.7

• 2.7

• 2.9

• 3.9

Answer explanation

To solve 5.6 - 2.9, align the numbers by the decimal point: 5.6 - 2.9 = 3.7. Thus, the correct answer is 3.7.

Tags

CCSS.5.NBT.B.7

Estimate the quotient: What is approximately 125÷4?

• 25

• 31

• 30

• 32

Answer explanation

To estimate 125 ÷ 4, we can round 125 to 120. Dividing 120 by 4 gives us 30. Thus, the approximate quotient is 30, making it the correct choice.

Tags

CCSS.5.NBT.B.6

CCSS.6.NS.B.2

What is 6.3÷0.9 using the standard algorithm?

• 7

• 6

• 5

• 8

Answer explanation

To solve 6.3 ÷ 0.9, you can multiply both numbers by 10 to eliminate the decimal: 63 ÷ 9 = 7. Thus, the correct answer is 7.

Tags

CCSS.6.NS.B.3

Write the fraction 15 as a decimal.

• 0.2

• 0.5

• 0.4

• 0.25

Answer explanation

To convert the fraction 15 into a decimal, divide 15 by 30. This results in 0.5, which is the correct answer. The other options do not represent the fraction 15 accurately.

What is the result of 4.9+2.1?

• 7.0

• 6.9

• 7.1

• 6.8

Answer explanation

To find the result of 4.9 + 2.1, simply add the two numbers together. 4.9 plus 2.1 equals 7.0, making it the correct answer.

Tags

CCSS.6.NS.B.3