Decimal Expansion

What is the decimal expansion of 34/8?

• 4.125

• 4.25555...

• 4.25

• 0.25

Answer explanation

When we divide 34/8 we get 4.25.

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

State which of the following 25/8 or 123/210 will have a terminating decimal expansion.

• 25/8

• 123/210

• Both

• None

Answer explanation

25/8 =( 5 x5) / (2 x2 x2) = (5²) / (2³) Hence 25/8 will have a terminating decimal Expansion

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

State whether( 23) / (2³. 5⁴.7³) will have a terminating decimal expansion or a non-terminating repeating decimal expansion

• Terminating

• Non-terminating

• Non-terminating Repeating

• No Decimal expansion

Answer explanation

Since the denominator is not of the form 2ᵐ x 5ⁿ, and it also has 7 as its factor, the decimal expansion is non-terminating repeating.

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

Identify which of the following are rational numbers.. 6.75, 8.432432, 8.432467842….., 7/100,√5

• 6.75, 8.432432, 8.432467842…….

• 6.75, 8.432432 ,7/100

• 6.75, 8.432467842…..,√5

• 8.432467842….., 7/100,√5

Answer explanation

Terminating decimals and fractions with denominator of the 2ᵐ x 5ⁿ form are rational numbers

Tags

CCSS.8.NS.A.1

Tags

CCSS.8.NS.A.1

Write each fraction as a decimal. Write each decimal as a fraction.

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

Write each fraction as a decimal.

What is 2 divided by 3 as a decimal

• .66.... terminating

• .66..... repeating

• .6 repeating

• .6 terminating

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

What do you call a decimal in which a pattern of one or more digits is repeated indefinitely?

• prime factor

• prime number

• repeating decimal

• terminating decimal

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

• 5.8

• 8.5

• .652

• .625