Donuts Make Students Bright
How to divide BIG numbers
VOCABULARY
QUOTIENTDIVISOR DIVIDEND
When dividing big numbers remember that….
Donuts divide
Make multiply
Students subtract
BRight bring-down/
remainder
Divide this….
3 685
D2
3 685 6 / 3 = 2
M 2
3 6856
2 x 3 = 6
S 2
3 685 -6
0
6 – 6 = 0
After you bring down, you start the donut process all over again.
D 22
3 685 -6
08 new dividend
8 / 3 = 2 r2
M 223 685 -6
08 6
2 x 3 = 6
S 223 685 -6
08 -6
2
8 – 6 = 2
Br 223 685 -6
08 -6
25
Start the donut process again.
D 2283 685 -6
08 -6
25 new dividend
25 / 3 = 8 r1
M 2283 685 -6
08 -6
25 24
8 x 3 = 24
S 2283 685 -6
08 -6
25 - 24
1
25 – 24 = 1
Br 2283 685 -6
08 -6
25 - 24
1
There isn’t another number to bring down.
The number left is less than the divisor.
So, the one becomes a remainder.
Br 228 r13 685 -6
08 -6
25 - 24
1
And you are done.
How can you check your answer?
Multiply the quotient by the divisor, then add in the remainder. It should add up to the dividend.
228 r13 685 -6
08 -6
25 - 24
1
228
X 3
684
+ 1
685