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In this lesson, we will learn how to multiply two numbers, where one of them is a one-digit number and the other is a two-digit number, with regrouping.

Q1:

Find 3 8 × 4 .

Q2:

If it takes 14 cups to fill a jug of milk, how many cups are needed to fill 4 jugs of milk?

Q3:

You know that 9 × 9 = 8 1 , 9 × 8 = 7 2 , and 9 × 3 = 2 7 . Use this to find 9 × 1 7 .

Q4:

Adam wants to know the answer to 2 2 × 8 . His friends tell him other multiples of 8.

Explain how he can use his friends’ answers to figure out 2 2 × 8 .

What is 2 2 × 8 ?

Q5:

A boy has 89 pounds. Can he buy 7 pens if each one costs 14 pounds?

Q6:

If a child bought 8 toys which cost 57 pounds each, what was the total cost?

Q7:

Use Engy's fact to find the missing numbers.

1 8 × 4 = 7 6 −

1 8 × 4 =

Q8:

Benjamin spilled ink on his multiplication homework. Help him remember what he did.

Use his work to find 1 3 × 4 .

What calculation should he do to find the missing number?

Q9:

A man bought 5 metres of cloth. If the price of cloth is 82 LE per metre, how much did he pay?

Q10:

If a country receives 28 million visitors every year, about how many people will visit it in a period of seven years?

Q11:

An oxygen molecule consists of two atoms. If there are 25 oxygen molecules, determine how many atoms are present.

Q12:

Samar and Nader have been organizing their comics.

Samar puts 14 comics on each shelf of her bookcase and fills 6 shelves.

Nader puts 17 comics on each shelf of his bookcase and fills 5 shelves.

Who has more comics?

How many more comics does she/he have?

Q13:

Calculate .

Use Karim’s and Yasmine’s facts to help you.

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