36 X 23 THINK 36 X 3 FIRST 36 X 3 3 X 6 1 8 Carry the one 3 X 3 9 and one more is 10 ID: 916247
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Slide1
2 Digit by 2 Digit Multiplication
Slide236 X 23
Slide3THINK:
36 X 3
FIRST
Slide436
X 3
3 X 6 = 1
8
Carry the one
3 X 3 = 9 and one more is
10
Slide536
X 3 10
8
1
Slide636
X 2
3
10
8
Cross out the 1 after you use it
1
Slide7NOW THINK:
“I am multiplying 36 X 20”
3 6
X
2
3
108
Slide81
st
-THINK:
“I am multiplying by tens so I need a zero.”
36
X
2
3
108
0
Slide9THINK:
2 x 6 = 12
Write down the
2
and carry the one.
Slide1036
X
23
10 8
20
1
1
Slide112 X 3 = 6
Add the one you carried over to make
7
Slide1236 X 2
3
10 8
72 0
1
1
Slide1336
X
2
3
10 8
72 0
1
1
CROSS OUT THE NUMBER AFTER YOU USE IT.
Slide14SINCE MULTIPLICATION IS A FORM OF ADDITION AND WE ARE GROUPING OUR ANSWERS TOGETHER
WE WILL ADD THE TWO NUMBERS TO GET THE FINAL PRODUCT
Slide1536
X
23
10 8
+
72 0
8 2 8