Simple Multiplication
Equations
Math Strategies
Do you agree?
Number Tables
100
6x5
24
100
A cat is 20 cm tall. The tree is about 4 times taller than the man. If t represents the height of the tree, which equation represents this situation?
a. 4 x h = 20
b. 20 - h = 4
c. 4 + 20 = h
d. 4 x 20 = h
d. 4 x 20 = h
100
Solve this multiplication problem using a picture.
2x5
10
100
Jared says, "I found 4 x 6 is 24 because I doubled from 2 x 6 - 12". Is Jared correct? Explain using words numbers or pictures.
Yes
2 groups of 6 plus 2 groups of 6 is the same as 4 groups of 6. Doubling in this case is correct.
100
What number goes in the blank box on the LEFT table?
9
200
7x8
56
200
TRUE OR FALSE
3 x 7 = 4 x 6
FALSE
200
Solve this multiplication problem using repeated addition.
7x3
21
200
Robbie says, "I know 5 x 3 = 8." Is he correct? Show your work using pictures, numbers or words.
No he is not. 5 x 3 = 15. Robbie was doing addition when he should have been multiplying.
200
What number goes in the blank box on the RIGHT table.
36
300
4x_____=20
5
300
TRUE OR FALSE
3 x 5 = 5 x 3
TRUE
300
Solve this multiplication problem using skip counting.
4x8
32
300
Marcus is going to multiply 6x7. He said "If I find out what 5x7 is, I can add one group of 7 to get my new product." Is he correct? Explain your answer using numbers pictures or words.
Yes.
5 x 7 = 35
35 + 7 = 42
6 x 7 = 42
300
What number goes in the blank box of the top chart.
6
400
9x___=72
8
400
TRUE OR FALSE
6 X 4 = (5 X 4) + (1 X 4)
TRUE
400
Solve this multiplication problem using skip counting on a number line.
3x9
27
400
When Rosemary got an array that was 5 rows of 2, she wrote the equation 5+2=10. Is this equation correct? Explain why in 1-2 sentences.
No, 5+2 would be seven. She needed a multiplication sign so her equation could say 5x2=10.
400
2 = 4
3 = 6
4 = ?
5 = 10
What Number should go in the ?
8
500
8x2= ____x4
4
500
Use a plus one/minus one fact to solve 9x4.
You should have 2 equations and work written down.
10 x 4 = 40
9 x 4 = 36
500
Solve this multiplication problem using an array.
8x6
48
500
Miss Miller wanted to know how many window panes she had to wash in the room. She saw we had two sets of windows and each one has 6 panes. Her product was 12 window panes. Is this correct? Why or why not? Show your thinking with words, numbers or pictures.
Yes, she is correct. 2 x 6 = 12.
500
1 = 6
2 = 12
3 = 18
4 = ?
What number should the ? be?
24