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3.OA.3 MULTIPLICATION AND DIVISION STRATEGIES ARRAYS AND DRAWINGS.

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Presentation on theme: "3.OA.3 MULTIPLICATION AND DIVISION STRATEGIES ARRAYS AND DRAWINGS."— Presentation transcript:

1 3.OA.3 MULTIPLICATION AND DIVISION STRATEGIES ARRAYS AND DRAWINGS

2 GROUP SIZE UNKNOWN - ARRAY If 18 apples are arranged into 3 equal groups. How many apples will be in each group?

3 NUMBER OF GROUPS UNKNOWN - ARRAY I have 28 pieces of gum for my friends. Each friend gets 4 pieces. How many friends do I have?

4 UNKNOWN PRODUCT - ARRAY What multiplication problem is represented by the drawing below?

5 PRODUCT UNKNOWN– AREA MODEL ARRAY I have 18 packs of markers. Each pack has 4 markers in it. How many markers do I have in total? total markers 4032

6 TRUE OR FALSE My friend multiplied these two numbers. Below is their reasoning. Are they correct? If not, what advice do you have for this student? 18 x 6 =

7 WRITE A WORD PROBLEM REPRESENTED BY THE DRAWING

8 DIVISION - AREA MODEL ARRAY GROUP SIZE UNKNOWN If you have 48 inches of ribbon cut into 6 pieces, how long will each piece measure? 48 inches of Ribbon 6 pieces 3 X 6 = 18 5 X 6 = 30

9 DIVISION – ARRAY NUMBER OF GROUPS UNKNOWN If 56 pieces of fruit are to be packed 4 to a bag. How many bags will be needed? Use a drawing or array to solve. Be prepared to share your answer and explain.

10 DIVISION – ARRAY NUMBER OF GROUPS UNKNOWN Same Problem - If 56 pieces of fruit are to be packed 4 to a bag. How many bags will be needed? Can you explain this drawing? Is it correct? Is there anything missing?

11 DIVISION – ARRAY NUMBER OF GROUPS UNKNOWN Same Problem - If 56 pieces of fruit are to be packed 4 to a bag. How many bags will be needed? Can you explain this array? Is it correct? Is there anything missing?

12 GIVEN THE ARRAY WRITE A WORD PROBLEM 72 buttons 8 buttons

13 GIVEN THE ARRAY WRITE A WORD PROBLEM How many shirts can I make if a shirt requires 8 buttons and I have a total of 72 buttons? 9 shirts 72 buttons 4 x 8 buttons 5 x 8 buttons 8 buttons 40 buttons 32 buttons


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