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Get Ready: Relate Fractions, Decimals, and Percents

Percents, decimals, and fractions are three ways to say the same amount. Percent means "out of 100." If you already know 1/2 = 0.5 and how to read tenths and hundredths, switching between them is easy.

Readiness Pre-Lesson Unit 4 ยท Lesson 2 Builds toward 6.RP.3c
Readiness progress: 0%
Why this matters for Lesson 4-2: Percents, decimals, and fractions are three ways to say the same amount. Percent means "out of 100." If you already know 1/2 = 0.5 and how to read tenths and hundredths, switching between them is easy.
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Quick Check ยท 1 minute

Where should you start?

Answer these 3, then press Show my path. No grade โ€” this just points you to the right level.

1. Percent means "out of ___". Which number?

2. What is 1/2 as a decimal?

3. Which fraction equals 1/2?

๐Ÿงฑ Start at Level 0. We'll build this from the ground up with small steps. That's totally fine โ€” take your time below.
๐Ÿ› ๏ธ Start at Level 1. You've got the idea โ€” a little guided practice and you'll be ready.
๐Ÿš€ Start at Level 2. Your basics are strong! Do the quick warm-up and head into the lesson.
โš ๏ธ Answer all 3 questions first, then press Show my path.
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Learn It

Three ways, one amount

Percent means "out of 100." So a percent is just a fraction with 100 on the bottom, which is also an easy decimal.

50% = 50/100 = 0.5 = 1/2 โ€” all the same half.
25% = 25/100 = 0.25 = 1/4. To go from percent to decimal, slide the dot 2 places: 25% โ†’ 0.25.
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Practice ยท Your Level

Try It

Your quick check picks one for you, but you can switch any time:

Level 0 Build the idea of 'out of 100' step by step.

A. 50% means 50 out of how many?

Hint

Percent always means out of 100.

B. Which decimal equals 1/2?

Hint

Half of 1 whole is 0.5.

C. Which decimal equals 1/4?

Hint

A quarter of 1 whole is 0.25.

Level 1 Switch between the three forms.

A. Write 25% as a decimal.

Hint

25% = 25/100 = 0.25.

B. Write 0.5 as a percent.

Hint

0.5 = 50/100 = 50%.

C. Which fraction equals 25%?

Hint

25/100 simplifies to 1/4.

Level 2 Stretch your conversions.

A. Write 1/4 as a percent.

Hint

1/4 = 25/100 = 25%.

B. Which is the SAME as 0.75?

Hint

0.75 = 75/100 = 75% = 3/4.

โ˜…
Exit Ticket

Show You're Ready

1. Write 50% as a fraction.

Hint

50/100 simplifies to 1/2.

2. Write 0.25 as a percent.

Hint

0.25 = 25/100 = 25%.

๐ŸŽ‰ You're warmed up!

You've practiced exactly what Lesson 4-2 uses. Time to dive in.

Start Lesson 4-2 โ†’