Addition, Substraction, Multiplication, and Division of Mass

Deni has 2 kg sugar and Anto has 4 kg sugar. What is the total mass of their sugar?

What is the method to solve the problem above?

• Substraction

• Division

• Multiplication

• Addition

The mass of 10 sharpeners is 70 g. Each sharpener has the same mass. What is the mass of each sharpener?

What is the method to solve the problem above?

• Substraction

• Multiplication

• Division

• Addition

How is the counting process for the bar model above?

• 20 + 8 = ?

• 20 - 8 = ?

• 20 $\div$ 8 = ?

• 20 x 8 = ?

How is the counting process for the model above?

• 7 + 3 = ?

• 7 - 3 = ?

• 7 x 3 = ?

• 3 x 7 = ?

Deni buys a bag of onions of mass 750 g. He sells 480 g. What is the mass of onions left?

How is the model for the problem above?

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Rosa bought some packets of beads. The total mass of the beads was 36 g. Each packet of beads had a mass of 4 g. How many packets of beads did Rosa buy?

• 36 g $\div$ 4 g = 9 g

• 36 g $+$ 4 g = 40 g

• 36 g $\times$ 4 g = 144 g

• 36 g $-$ 4 g = 32 g

Bu Esti has 4 bags of rice. Each bag has a mass of 8 kg. What is the total mass of the 4 bags of rice?

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Andrew is 32 kg. He is 5 kg lighter than Salim. How heavy is Salim?

• Salim is 37 kg

• Salim is 27 kg

• Salim is 5 kg

• Salim is 32 kg

The total mass of some cherries is 36 g. Each cherry has a mass of 4 g. How many cherries are there?

• There are 4 cherries

• There are 40 cherries

• there are 32 cherries

• There are 9 cherries

The mass of 5 bags of potatoes is 30 kg. Each bag has the same mass. What is the mass of each bag?

• 30 kg $+$ 5 kg = 35 kg

• 30 kg $-$ 5 kg = 25 kg

• 30 kg $\div$ 5 kg = 6 kg

• 30 kg $\times$ 5 kg = 150 kg