Post on 31-Mar-2015
3.OA.3
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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