Multiplication exercises for 3rd grade

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a) As Mauricio stacked triple, it means he stacked three times as many cubes as Fernando.

Counting in the image, we see 7 stacked cubes. In this way, we have:

3 x 7 = 21

Maurício stacked 21 cubes.

b) If he had stacked the quadruple, it would have been four times as much.

4 x 7 = 28

Mauritius would have stacked 28 cubes.

a) Double is multiplying by two.

2 x 2 = 4

Fabricio scored 4 points.

b) The triple is to multiply by three.

2 x 3 = 6

Jussara scored 6 points.

c) The fourfold is to multiply by four.

2 x 4 = 8

Fernanda scored eight points.

d) The quintuple is to multiply by five.

2 x 5 = 10

Patrick scored ten points.

a) To each term, we add 3 units. Since the first term is three, all others are the results of multiplying by 3.

The fourth term will be: 4 x 3 = 12. The sequence up to the tenth term is:

3, 6, 9, 12, 15, 18, 21, 24, 27, 30

b) To each term, we add 5 units. Since the first term is five, all others are the results of multiplying by 5.

The fourth term will be: 4 x 5 = 20. The sequence up to the tenth term is:

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5, 10, 15, 20, 25, 30, 35, 40, 45, 50

c) To each term, we add 7 units. Since the first term is seven, all the others are the results of multiplying by 7.

The fourth term will be: 4 x 7 = 28. The sequence up to the tenth term is:

7, 14, 21, 28, 35, 42, 49, 56, 63, 70

a) As there are eight teams formed by six players each, they will be:

6 x 8 = 48

There are forty-eight vacancies for holders.

b) For each team, 6 starters and 6 reserves are called up, that is, 12 players per team.

How are eight teams:

12 x 8 = 96

Ninety-six players will be called up.

a) There are 8 cartons of eggs.

b) There are six eggs per box.

c) 8 x 6 = 48. There are 48 eggs in total.

d) A dozen equals 12, so it takes two boxes to make a dozen.

2 boxes x 6 six eggs = 12 (one dozen)

Since there are 48 eggs, we have:

12 + 12 + 12 + 12 or 12 x 4 = 48

So there are 4 dozen eggs. As each dozen costs R$16.00, selling all four, he will raise:

16 x 4 = 64

It will raise R$64.00.

Answer: 1 620 pages.

As there are 36 comics in his collection, and each has 45 pages, he read:

36 x 45 = 1 620

Henrique read 1,620 pages in his collection.

Lentil: 3 packs
Price per package: R$11.00

3 x BRL 11.00 = BRL 33.00

Pea: 4 packs
Price per package: R$8.00

4 x R$8.00 = R$32.00

Avocados: 2 pieces
Price per unit: R$4.00

2 x BRL 4.00 = BRL 8.00

Wholemeal bread: 10 pieces
Price per unit: BRL 1.00

10 x BRL 1.00 = BRL 10.00

Soy Protein: 3 packets
Price per unit: R$6.00

3 x BRL 6.00 = BRL 18.00

Adding the amounts

33 + 32 + 8 + 10 + 18 = 101

Thus, Akeny spent one hundred and one reais in the market.

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