Decimals worksheet 9

The total mass of Faizal, John, and Raju is 193.3kg. John is 12.5kg heavier than Raju and 19.8kg heavier than Faizal. Find Raju's mass.

Who is the heaviest?

• Faizal

• John

• Raju

The total mass of Faizal, John, and Raju is 193.3kg. John is 12.5kg heavier than Raju and 19.8kg heavier than Faizal. Find Raju's mass.

Who is the lightest?

• Faizal

• John

• Raju

The total mass of Faizal, John, and Raju is 193.3kg. John is 12.5kg heavier than Raju and 19.8kg heavier than Faizal. Find Raju's mass.

Draw your model. What is the first step? (Hint: I want to find 3xs of John's mass)

• 193.3 + 12.5 + 19.8

• 193.3 - 12.5 - 19.8

• 193.3 ÷ 3

The total mass of Faizal, John, and Raju is 193.3kg. John is 12.5kg heavier than Raju and 19.8kg heavier than Faizal. Find Raju's mass.

What is John's mass? You can use calculator. Ans: ______ kg

The total mass of Faizal, John, and Raju is 193.3kg. John is 12.5kg heavier than Raju and 19.8kg heavier than Faizal. Find Raju's mass. Ans: ____________ kg

The total mass of Alice and Bernice is 122.1kg. The total mass of Alice and Mei Ling is 71.5kg. Bernice is 3 times as heavy as Mei Ling. What is Alice's mass?

Draw a model. What should you do first?

• 122.1 + 71.5

• 122.1 - 71.5

• 122.1 x 3

• 71.5 x 3

The total mass of Alice and Bernice is 122.1kg. The total mass of Alice and Mei Ling is 71.5kg. Bernice is 3 times as heavy as Mei Ling. What is Alice's mass? You have subtracted 71.5kg from 122.1kg. What does that represent?

• Mei Ling's mass.

• Twice of Mei Ling's mass.

• 3 x Mei Ling's mass

• Alice's mass

The total mass of Alice and Bernice is 122.1kg. The total mass of Alice and Mei Ling is 71.5kg. Bernice is 3 times as heavy as Mei Ling. What is Alice's mass?

What is Mei Ling's mass? Ans: ____________ kg

The total mass of Alice and Bernice is 122.1kg. The total mass of Alice and Mei Ling is 71.5kg. Bernice is 3 times as heavy as Mei Ling. You have found that Mei Ling's mass is 25.3kg. What is Alice's mass? You can use calculator. Ans: ___________ kg

Janice saved $0.80 every day from Monday to Friday. She saved $1 each on Saturday and Sunday. Starting from Monday, how many days did she take to save $22? What should you do first?

• $0.80 + $1 = $1.80

  $1.80 x 7

• $0.80 x 5 = $4

  $4 + $1 = $5

• $0.80 x 5 = $4

  $4 + $1 + $1 = $6

• $0.80 + $1 = $1.80

  $1.80 x 22