[FREE] Fun Math Games & Activities Packs

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Place ValueMultiplying and dividing 10, 100, 1000

Simplifying fractions Equivalent fractionsMixed numbers and improper fractions

Adding and subtracting

Fractions (numerator and denominator)Here you will learn about converting a decimal to percent.

Students will first learn about converting decimals to percents in 6th grade math as part of their work with ratios and proportional relationships and will expand that knowledge to solving problems such as finding the whole given a part and the percent or finding the part given the whole and the percent.

This will later be used to find percent increase/decrease in 7th grade.

Converting a **decimal to percent** is representing the decimal as a percentage without changing its value.

The word percent means one part out of one hundred, and you can use this information to express a decimal as a percent.

For example,

\begin{aligned} & 0.25=25 \% \\\\ & 0.45=45 \% \\\\ & 0.33333...=33.3 \% \\\\ & 0.8=80 \% \end{aligned}

How does this apply to 6th grade math?

**Grade 6 – Ratios and Proportional Relationships (6.RP.A.3a)**Use ratio and rate reasoning to solve real-world and mathematical problems, for example, by reasoning about tables of equivalent ratios, tape diagrams, double number line diagrams, or equations.

a. Make tables of equivalent ratios relating quantities with whole-number measurements, find missing values in the tables, and plot the pairs of values on the coordinate plane. Use tables to compare ratios.

In order to convert a decimal to a percent, you need to:

**Multiply the decimal by**\bf{100}**and add the percent sign (**\textbf{\%}**).****Clearly state the answer showing ‘decimal’ = ‘percent’.**

Use this quiz to check your grade 4 to 6 students’ understanding of converting fractions, decimals and percents. 10+ questions with answers covering a range of 4th, 5th and 6th grade topics to identify areas of strength and support!

DOWNLOAD FREEUse this quiz to check your grade 4 to 6 students’ understanding of converting fractions, decimals and percents. 10+ questions with answers covering a range of 4th, 5th and 6th grade topics to identify areas of strength and support!

DOWNLOAD FREEConvert 0.7 to a percent.

**Multiply the decimal by**\bf{100}**and add the percent sign (**\textbf{\%}**).**

0.7\times100=70\%

The 7 has moved two places to the left. The decimal point does not move.

2**Clearly state the answer showing ‘decimal’ = ‘percent’.**

0.7=70\%

Convert 0.625 to a percent.

**Multiply the decimal by ** \bf{100} ** and add the percent sign (** \textbf{\%} **).**

0.625\times100

62.5\%

**Clearly state the answer showing ‘decimal’ = ‘percent’.**

0.625 =62.5\%

Convert 1.23 to a percent.

**Multiply the decimal by ** \bf{100} ** and add the percent sign (** \textbf{\%} **).**

1.23 \times 100=123\%

**Clearly state the answer showing ‘decimal’ = ‘percent’.**

1.23=123\%

Convert 0.006 to a percent.

**Multiply the decimal by ** \bf{100} ** and add the percent sign (** \textbf{\%} **).**

0.006 \times 100=0.6\%

**Clearly state the answer showing ‘decimal’ = ‘percent’.**

0.006=0.6\%

Convert 0.\overline{2} to a percent.

**Multiply the decimal by ** \bf{100} ** and add the percent sign (** \textbf{\%} **).**

0.\overline{2} \times 100

For this step, you need to remember that the 2 is repeating; this means it is repeated infinitely.

For example, 0.\overline {2}=0.222222222222…

So when you multiply the repeating decimal by 100, you still have the repeating 2. Therefore,

0.\overline{2}\times100= 22.\overline{2}\%

**Clearly state the answer showing ‘decimal’ = ‘percent’.**

0.\overline{2}=22.\overline{2}\%

Convert 0.\overline{142857} to a percent.

**Multiply the decimal by ** \bf{100} ** and add the percent sign (** \textbf{\%} **).**

0.\overline{142857} \times 100

For this step, you need to remember that the 142857 is repeating; this means it is repeated infinitely.

For example,

0.\overline{142857}=0.142857142857142857142857…

So,

0.\overline{142857} \times100=14.2857142857142857142857...

Therefore,

0.\overline{142857} \times 100=14.\overline{285714}

14.\overline{285714}\%

**Clearly state the answer showing ‘decimal’ = ‘percent’.**

0.\overline{142857} =14.\overline{285714}\%

- Use visual models such as hundreds grids or pie charts to illustrate the equivalence of decimals to percents and to demonstrate how both forms are ways to represent a part of a whole or a rate.

- Use real world contexts to demonstrate how decimals can be thought of as percentages.

- Conversion table worksheets for decimal to percent conversion have their place, but make sure that students have a conceptual understanding of the relationship between decimals and percentages.

**Mistakes with multiplication of**\bf{100}

Often mistakes are made when multiplying a value by 100 by moving the digits the incorrect number of decimal places.

**Not adding a percent sign**

Percents must end in a percentage symbol (\%).

For example,

50 is not a percentage but 50\% is.

**Not noticing a recurring decimal**

Sometimes a repeating decimal is not immediately obvious.

For example,

\cfrac{1}{7}=0.142857142857142857...

Therefore,

\cfrac{1}{7}= 0.\overline{142857}

1. Convert 0.1 to a percentage.

1\%

10\%

0.1\%

0.01\%

Start by multiplying the decimal value by 100.

0.1 \times 100

This gives you 10.

Add the percent sign to represent your answer as a percent.

10\% is your final answer.

0.1 = 10\%

2. Convert 0.4 to a percentage.

40\%

4\%

0.4\%

40\%

Start by multiplying the decimal value by 100.

0.4 \times 100

This gives you 40.

Add the percent sign to represent your answer as a percent.

40\% is your final answer.

3. Convert 1.1 to a percentage.

11\%

1.1\%

110

110\%

Start by multiplying the decimal value by 100.

1.1 \times 100

This gives you 110.

Add the percent sign to represent your answer as a percent.

110\% is your final answer.

4. Convert 0.006 to a percentage.

0.6

0.06\%

6\%

0.6\%

Start by multiplying the decimal value by 100.

0.006 \times 100

This gives you 0.6.

Add the percent sign to represent your answer as a percent.

0.6\% is your final answer.

5. Convert 30.05 to a percentage.

30.05\%

3,005\%

3,005

305\%

Start by multiplying the decimal value by 100.

30.05 \times 100

This gives you 3,005.

Add the percent sign to represent your answer as a percent.

3,005\% is your final answer.

6. Convert 0.\overline{4} to a percentage.

44.\overline{4}\%

44\%

44.4\%

0.\overline{4}\%

Start by multiplying the decimal value by 100.

0 .\overline{4} \times 100

This gives you 44.\overline{4}.

Add the percent sign to represent your answer as a percent.

4.\overline{4}\% is your final answer.

To convert a decimal to a percent, you multiply the decimal form of the number by 100 and add the percent symbol, or percentage sign (\%).

The repeating sequence should only be written once. If the repeating decimal value is the same digit, write one digit behind the decimal point with a line over the digit. If the repeating decimal is a sequence of three digits that repeat, write the three digits with a line over all of them.

If your decimal is greater than 1, your percent equivalent will be greater than 100\%.

If your decimal is less than 1, your percent equivalent will be less than 100\%.

If your decimal is equal to 1, your percent equivalent will be equal to 100\%.

- Arithmetic
- Properties of equality
- Addition and subtraction
- Decimals

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