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Multiplication Arrays and Addition

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Multiplication Arrays and Addition

Use arrays, repeated addition and multiplication sentences to show how groups make a total. Write your working where needed.

Arrays and equal groups

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1.Use the dot array above. How many rows and columns does it have? Write a repeated-addition sentence and a multiplication sentence for the total.

2.Draw an array with 4 rows and 3 counters in each row. Then write the multiplication sentence for your array.

3.Which multiplication sentence has the same total as 7 + 7 + 7 + 7 = 28?

7 × 7
4 × 7
4 × 4
7 × 3

4.True or false: an array with 2 rows and 8 columns has the same number of counters as an array with 8 rows and 2 columns.

TrueFalse

Write arrays as number sentences

Array description

Repeated addition

Multiplication

3 rows of 6

________________

3 × 6 = ____

________________

5 + 5 + 5 + 5

____ × ____ = ____

5.Complete both rows in the table: write the missing repeated addition, array description and multiplication sentence.

6.A tray holds 5 rows of 4 mini pikelets. Draw an array for the tray, then write one repeated-addition sentence and one multiplication sentence to show the total.

7.Which expressions all have a total of 24? Select every correct answer.

3 × 8
8 + 8 + 8
8 × 3
3 + 3 + 3 + 3 + 3 + 3 + 3 + 3
4 × 8

Solve and explain

8.At a community picnic, 6 plates each have 7 slices of apple. How many apple slices are there altogether? Show a repeated-addition or multiplication method.

9.Find 6 × 4 by writing it as repeated addition. Then calculate the total.

10.Explain how repeated addition can help you work out the total in an array with equal rows.