Unit 1: Day 4 (Decimals to Fractions)

What is 0.8 as a fraction?

• 8/10

• 8/100

• .8/10

• 10/8

Answer explanation

To express 0.8 as a fraction, we write it as 8/10. This is because 0.8 is equivalent to 8/10 when simplified.

What is 0.016 as a fraction?

• 16/10

• 16/100

• 16/1000

• 16/10000

Answer explanation

To express 0.016 as a fraction, we write it as 16/1000. This is because 0.016 = 16/1000, where the decimal point is moved three places to the right to convert to a fraction.

What is 2.05 as a fraction?

• 2 wholes and 5/10

• 2.5/100

• 2 wholes and 5/100

• 2.5/10

Answer explanation

The correct choice is 2 wholes and 5/100 because 2.05 can be expressed as 2 wholes and 5/100, representing the decimal value as a fraction.

Which choice BEST explains the 2 Rule of Divisibility.

• Any whole number with an even number or 0 in the ones place can be divisible by 2.

• Any whole number with an odd number or 0 in the ones place can be divisible by 2.

• Any whole number with a 5 or 0 in the ones place can be divisible by 2.

• Any whole number can be divisible by 2.

Answer explanation

Any whole number with an even number or 0 in the ones place can be divisible by 2.

Which choice BEST explains the 5 Rule of Divisibility.

• Any whole number with an even number or 0 in the ones place can be divisible by 5.

• Any whole number with an odd number or 0 in the ones place can be divisible by 5.

• Any whole number with a 5 or 0 in the ones place can be divisible by 5.

• Any whole number can be divisible by 5.

Answer explanation

Any whole number with a 5 or 0 in the ones place can be divisible by 5.

When do we test the 2 Rule or 5 Rule of Divisibility?

• When finding place value.

• When simplifying fractions.

• When multiplying fractions.

• When adding and subtracting fractions.

Answer explanation

When simplifying fractions.

What is 0.25 as a fraction in simplest form?

• 1/4

• 25/100

• 2/5

• 5/20

Answer explanation

To express 0.25 as a fraction in simplest form, we have 1/4. This is because 0.25 is equivalent to 1/4 when simplified.

What is 0.75 as a fraction in simplest form?

• 3/4

• 7/10

• 75/100

• 1/3

Answer explanation

To express 0.75 as a fraction in simplest form, we have 0.75 = 75/100 = 3/4 by dividing both numerator and denominator by 25 to simplify.

What is 0.5 as a fraction in simplest form?

• 1/2

• 5/10

• 2/5

• 10/20

Answer explanation

To express 0.5 as a fraction in simplest form, we have 1/2 as the correct choice. This is because 0.5 is equivalent to 1/2 when simplified.

What is 0.2 as a fraction in simplest form?

• 1/5

• 2/10

• 1/2

• 2/5

Answer explanation

To express 0.2 as a fraction, we can write it as 2/10. Simplifying by dividing both the numerator and denominator by their greatest common factor, which is 2, we get 1/5. Therefore, 0.2 as a fraction in simplest form is 1/5.