Multiplication
10 x 5 = ?
10 x 5 = 50
10 ÷ 2 = ?
10 ÷ 2 = 5
What numbers represent the factors in the multiplication problem?
3 x 4 = 12
3 and 4
What property does this multiplication problem show?
10 x 0 = 0
Zero Property
What multiplication fact do you think of to solve the following problem? Write out the complete multiplication problem.
90 ÷ 9 = ?
9 x 10 = 90
10 x 9 = 90
2 x 9 = ?
2 x 9 = 18
35 ÷ 5 = ?
35 ÷ 5 = 7
What number represents the product in the multiplication problem?
3 x 4 = 12
12
Give an example using the identity property of multiplication.
1 x _ = _
answers may vary
Solve 3 x 6 by drawing an array.
Hint* remember which number means how many rows you have and which number means how many in each row*
x x x x x x
x x x x x x
x x x x x x
4 x 6 = ?
4 x 6 = 24
24 ÷ 3 = ?
24 ÷ 3 = 8
What number represents the quotient in the following division problem?
12 ÷ 3 = 4
4
What property does this problem represent?
5 x 6 = 6 x 5
Commutative Property
Show how to solve 4 x 8 using a number line.
*draw answer on the board*
6 x 7 = ?
6 x 7 = 42
49 ÷ 7 = ?
49 ÷ 7 = 7
What number represents the dividend in the division equation?
12 ÷ 3 = 4
12
3 x 7?
(2 x 7 = 14) + (1 x 7 = 7) = 21
(3 x 5 = 15) + (3 x 2 = 6) = 21
Solve 5 x 8 by drawing a bar diagram
*draw answer on the board*
8 x 8 = ?
8 x 8 = 64
32 ÷ 8 = ?
32 ÷ 8 = 4
What number represents the divisor in the following division problem?
12 ÷3 = 4
3
When solving this problem, what property would you use? Show your work!
2 x 3 x 4
(2 x 3) x 4
6 x 4 = 24
2 x (3 x 4)
2 x 12 = 24
Explain the 9s pattern.
Tens place goes up 1; ones places goes down 1