Percentage and Division Concepts

Mr. Richards reviews grade six practice problems from unit four, lesson six, focusing on using diagrams to find the number of groups in fractions. The video covers several problems, including dividing whole numbers by fractions and calculating percentages mentally. Each problem is explained with diagrams to help visualize the concepts, and the video concludes with a review of key equations and mental math strategies.

How many groups of 1/4 are there in 3?

• 15

• 6

• 12

• 9

What is the result of dividing 3 by 3/5?

• 5

• 3

• 6

• 4

How many half days are there in a week?

• 12

• 7

• 14

• 10

What is the equivalent of dividing 1 by 5/6?

• 1/5

• 6/5

• 5/6

• 1/6

Which equation represents how many groups of 4/5 are in 1?

• 4/5 divided by 1

• 4/5 times 1

• 1 divided by 4/5

• 1 times 4/5

What is 10% of 70?

• 14

• 5

• 10

• 7

How do you calculate 25% of 160 mentally?

• Divide by 2

• Multiply by 2

• Divide by 4

• Multiply by 4

What is 50% of 90?

• 50

• 45

• 40

• 30

How can you find 75% of 48?

• Add 25% and 50% of 48

• Multiply by 3/4

• Divide by 4

• Multiply by 2

What is 75% of 300?

• 250

• 200

• 150

• 225