5th Grade Decimal Review

Front

What is a decimal?

Back

A decimal is a way of representing fractions using a point (decimal point) to separate the whole number part from the fractional part.

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CCSS.5.NBT.A.1

CCSS.5.NBT.A.3

CCSS.5.NBT.B.7

Front

How do you determine the number of decimal places in a product?

Back

Count the total number of decimal places in both factors. The product will have that many decimal places.

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CCSS.5.NBT.A.2

CCSS.5.NBT.B.7

Front

What is the standard form of a decimal number?

Back

Standard form is the way of writing numbers using digits, where the decimal point is placed according to the value of the digits.

Tags

CCSS.5.NBT.A.1

CCSS.5.NBT.A.3

CCSS.5.NBT.B.7

Front

What is expanded form?

Back

Expanded form shows a number as the sum of the values of its digits. For example, 326.408 = (3 x 100) + (2 x 10) + (6 x 1) + (4 x 0.1) + (8 x 0.001).

Tags

CCSS.5.NBT.A.1

Front

How do you subtract decimals?

Back

Align the decimal points and subtract as you would with whole numbers, then place the decimal point in the answer.

Tags

CCSS.5.NBT.B.7

Front

What does the term 'hundredths' mean in decimals?

Back

Hundredths refer to the second digit to the right of the decimal point, representing parts of 100.

Tags

CCSS.5.NBT.A.1

CCSS.5.NBT.B.7

Front

What is the value of the digit 5 in the number 3.256?

Back

The value of 5 in 3.256 is 5 tenths or 0.5.

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CCSS.5.NBT.A.1

CCSS.5.NBT.A.3

Front

How do you multiply decimals?

Back

Multiply the numbers as if they were whole numbers, then count the total number of decimal places in both factors to place the decimal in the product.

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CCSS.5.NBT.B.7

Front

Back

The result is 9.35.

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CCSS.5.NBT.A.3

CCSS.5.NBT.B.7

Front

How do you convert a decimal to a fraction?

Back

Write the decimal as a fraction with the decimal number as the numerator and a power of 10 as the denominator, then simplify.