NAME ______________________________ DATE _______________

HOMEWORK

Seeing Number Dot Patterns

Look at each picture in different ways. Write equations to show different ways to multiply that you can see in the picture.

  • 1 Two arrays of counters, side-by-side. Each array shows 5 rows of 3 counters.

    Example: 5 × 3 × 2 = 30

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  • 2 Eight arrays of counters. The arrays are in 2 rows of 4 arrays. Each array shows 3 rows of counters. The first row has 2 counters, the second row has 1 counter, and the third row has 2 counters.

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  • 3 Eight arrays of counters, side-by-side. The arrays are in 2 groups of 4 arrays. Each array shows 4 rows of 2 counters.

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NOTE

Students are beginning a new investigation—a review of multiplication. For each picture above, they write multiplication equations representing different ways to find the number of dots.

MWI Arrays and Unmarked Arrays


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Table of Contents

Investigations 3 in Number, Data, and Space®, Student Activity Book Unit 1 Puzzles, Clusters, and Towers Unit 2 Prisms and Solids Unit 3 Rectangles, Clocks, and Tracks Unit 4 How Many People and Teams? Unit 5 Temperature, Height, and Growth Unit 6 Between 0 and 1 Unit 7 Races, Arrays, and Grids Unit 8 Properties of Polygons