3.oa.3 multiplication and division strategies arrays and drawings

3.OA.3

MULT

IPLIC

ATIO

N

AND DIV

ISIO

N

STRAT

EGIES

AR

RA

YS

AN

D D

RA

WI N

GS

GROUP SIZE UNKNOWN - ARRAY

If 18 apples are arranged into 3 equal groups. How many apples will be in each group?

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?

UNKNOWN PRODUCT - ARRAY

What multiplication problem is represented by the drawing below?

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

10 + 8

4

72 total markers

40 32

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 = 116 10 + 8

6 60 56

WRITE A WORD PROBLEM REPRESENTED BY THE DRAWING

DIVISION - AREA MODEL ARRAY GROUP SIZE UNKNOWNIf 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

DIVISION – ARRAY NUMBER OF GROUPS UNKNOWNIf 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.

DIVISION – ARRAY NUMBER OF GROUPS UNKNOWNSame 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?

DIVISION – ARRAY NUMBER OF GROUPS UNKNOWNSame 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?

GIVEN THE ARRAY WRITE A WORD PROBLEM

72 buttons

8 buttons

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