142 Speed Math for Kids
What can we use as factors? Four times 9 is 36, and so is 6 times
- We could also use 3 times 12. Let’s try our calculation using
6 times 6.
We will use the following division as an example:
2,340 ÷ 36 =
We can set up the problem like this:
6
6 2,340
Or like this:
6 2,340
6
Use the layout that you are comfortable with.
Now, to get started we divide 2,340 by 6. We use the method we
learned in the previous chapter.
We begin by dividing the digit on the left. Th e digit on the left is 2,
so we divide 6 into 2. Two is less than 6, so we can’t divide 2 by 6,
so we join 2 to the next digit, 3, to make 23.
What number do we multiply by 6 to get an answer of 23? Th ere is
no whole number that gives you 23 when you multiply it by 6. We
now ask, what will give an answer just below 23? Th ree times 6 is - Four times six is 24, which is too high, so our answer is 3. Write
3 above the 3 of 23. Subtract 18 (3 × 6) from 23 to get an answer of
5 for our remainder. We carry the 5 remainder to the next digit, 4,
making it 54. Our work so far looks like this:
6 3
6 2,3^540