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Percent of a Number (Mental Math) - Printable Mathematics Worksheets class 6 - Wayground

Percent of a Number (Mental Math)

18 questions

6th - 6th Grade

Mathematics

Percent of a Number (Mental Math) is a Grade 6 mathematics worksheet that builds fluency with finding percentages of whole numbers without relying on lengthy written procedures. Students begin by identifying that percent means “out of 100,” then solve 17 fill-in-the-blank problems involving values such as 1%, 5%, 10%, 25%, 75%, 100%, and 150% of a number. The worksheet also includes problems that work backward from a known percentage to determine a related value, helping students distinguish between finding a percent of a number and using a percentage relationship to find the whole. With one multiple-choice item and 17 numerical responses, it provides focused practice for independent work, review, or a quick check of Grade 6 percent understanding. This is a free printable worksheet with an answer key for efficient classroom use and self-checking.

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Worksheets

Percent of a Number (Mental Math)

Total questions: 18

Name
Class
Date
1.

What does percent mean?

a)

out of 1

b)

out of 10

c)

out of 100

d)

out of 1000

2.

What is 10% of 80?

(a)  

3.

What is 25% of 44?

(a)  

4.

What is 75% of 20?

(a)  

5.

What is 20% of 30?

(a)  

6.

What is 100% of 18?

(a)  

7.

What is 1% of 400?

(a)  

8.

What is 10% of 90?

(a)  

9.

What is 25% of 80?

(a)  

10.

What is 39% of 100?

(a)  

11.

What is 150% of 40?

(a)  

12.

What is 5% of 20?

(a)  

13.

If 30% is 90... what is 10%

(a)  

14.

If 10% is 6... what is 100%

(a)  

15.

If 25% is 8... what is 100%

(a)  

16.

If 10% is 12... what is 50%

(a)  

17.

If 50% is 16... what is 75%

(a)  

18.

If 1% is 3... what is 15%

(a)  

Answer Key

Percent of a Number (Mental Math)

Total questions: 18

1.
c)

out of 100

2.
8
3.
11
4.
15
5.
6
6.
18
7.
4
8.
9
9.
20
10.
39
11.
60
12.
1
13.
60
14.
60
15.
32
16.
60
17.
24
18.
45

FAQs

What does the Percent of a Number (Mental Math) worksheet cover?

This Grade 6 worksheet focuses on calculating percentages of whole numbers mentally, beginning with the meaning of percent as out of 100. Its one multiple-choice question and 17 fill-in-the-blank items practice direct calculations such as 10%, 25%, 75%, 100%, and 150% of a number, along with problems that require working backward from a known percentage.

How can I use this worksheet to teach finding a percent of a number?

Begin by reviewing that a percent describes a portion out of 100, then model an accessible benchmark such as 10% before connecting it to the other percentages in the worksheet. Have students explain how they found answers for the direct calculation items, then discuss the difference between finding a percentage of a number and solving the reverse-style items that provide a percentage value and ask for another related value.

What mistakes should I watch for on this percent mental-math worksheet?

Students may interpret percent as out of 10 instead of out of 100, or confuse the percentage with the resulting amount. Watch for errors with 100% and 150%, since these require recognizing the whole and an amount greater than the whole, and check that students identify whether each fill-in-the-blank item asks for a percentage of a number or asks them to reason backward from a known percentage.

How do I assign and grade this worksheet?

The Percent of a Number (Mental Math) worksheet is available as a printable PDF and as a digital quiz on Wayground, with a complete answer key for checking all 18 responses. For printable submissions, teachers can scan student work with the Wayground for Teachers app to streamline grading.

How does this worksheet build mental-math fluency with benchmark percentages?

The repeated fill-in-the-blank calculations use recognizable percentages, including 1%, 5%, 10%, 20%, 25%, 75%, 100%, and 150%, so students can build efficient relationships between percentages and whole numbers. The reverse-style items extend that practice by asking students to use a known percentage value to determine another part of the relationship, rather than only calculating in one direction.

Where can I find more free worksheets like this on Wayground?

Wayground offers a broad collection of free printable worksheets and practice problems across subjects, with downloadable PDFs and answer keys to help students develop essential skills and concepts. Browse more resources at https://wayground.com/en-us/worksheets.