multiplication wrestling
Post on 24-Jan-2018
1.438 Views
Preview:
TRANSCRIPT
Multiplication Wrestling
What is 78 X 36?
What is 78 X 36?
How do we solve this?
What is 78 X 36?
How do we solve this?
Think....FOIL
What is FOIL?
What is FOIL?
F- First Two
What is FOIL?
F- First Two
O- Outter Two
What is FOIL?
F- First Two
O- Outter Two
I- Inner Two
What is FOIL?
F- First Two
O- Outter Two
I- Inner Two
L- Last Two
Step 1:
Turn your multiplication fact into a partial sum fact.
78 X 36= (70 + 8) X (30 +6)
Step 2: Find the FOIL
Step 2: Find the FOIL
(70 + 8) x (30 + 6)
F-First Two
(70 x 30)
Step 2: Find the FOIL
Step 2: Find the FOIL
(70 +8) x (30 + 6)
Step 2: Find the FOIL
(70 +8) x (30 + 6)
O- Outter Two
Step 2: Find the FOIL
(70 +8) x (30 + 6)
O- Outter Two
(70 x 6)
Step 2: Find the FOIL
Step 2: Find the FOIL
(70 + 8) x (30 +6)
Step 2: Find the FOIL
(70 + 8) x (30 +6)
I- Inner Two
Step 2: Find the FOIL
(70 + 8) x (30 +6)
I- Inner Two
(8 x 30)
Step 2: Find the FOIL
Step 2: Find the FOIL
(70 + 8) x (30 + 6)
Step 2: Find the FOIL
(70 + 8) x (30 + 6)
L- Last Two
Step 2: Find the FOIL
(70 + 8) x (30 + 6)
L- Last Two
(8 x 6)
Step 3: Add up the FOIL
Step 3: Add up the FOIL
F- (70 x 30) = 2100
Step 3: Add up the FOIL
F- (70 x 30) = 2100
O- (70 x 6)= 420
Step 3: Add up the FOIL
F- (70 x 30) = 2100
O- (70 x 6)= 420
I- (8 x 30)= 240
Step 3: Add up the FOIL
F- (70 x 30) = 2100
O- (70 x 6)= 420
I- (8 x 30)= 240
L- (8 x 6)= 48
Step 3: Add up the FOIL
F- (70 x 30) = 2100
O- (70 x 6)= 420
I- (8 x 30)= 240
L- (8 x 6)= 48
2100+ 420 + 240 + 48= 2,808
SO...
78 x 36 = 2,808
27 x 45
27 x 45
(20 + 7) x (40 + 5)
27 x 45
(20 + 7) x (40 + 5)
F- (20 x 40)
27 x 45
(20 + 7) x (40 + 5)
F- (20 x 40)
O- (20 x 5)
27 x 45
(20 + 7) x (40 + 5)
F- (20 x 40)
O- (20 x 5)
I- (7 x 40)
27 x 45
(20 + 7) x (40 + 5)
F- (20 x 40)
O- (20 x 5)
I- (7 x 40)
L- (7 x 5)
27 x 45
(20 + 7) x (40 + 5)
F- (20 x 40)
O- (20 x 5)
I- (7 x 40)
L- (7 x 5)
800 + 100+280+35= 1215
93 x 76
93 x 76
(90 + 3) x (70 + 6)
93 x 76
(90 + 3) x (70 + 6)
F- (90 x 70)
93 x 76
(90 + 3) x (70 + 6)
F- (90 x 70)
O- (90 x 6)
93 x 76
(90 + 3) x (70 + 6)
F- (90 x 70)
O- (90 x 6)
I- (3 x 70)
93 x 76
(90 + 3) x (70 + 6)
F- (90 x 70)
O- (90 x 6)
I- (3 x 70)
L- (3 x 6)
93 x 76
(90 + 3) x (70 + 6)
F- (90 x 70)
O- (90 x 6)
I- (3 x 70)
L- (3 x 6)
6300+540+210+18= 7068
top related