This is one of a variety of "subtraction solutions"--basically a different way to subtract by breaking numbers down into 10-digit chunks. It's not especially helpful for small subtraction problems, but as math gets more complicated, this method will come in handy.

Step-by-step explanation:

Here's an example: Jim had a bag of 15 jelly beans. He eats 8. How many jelly beans does he have left? Take apart the number to make a 10. Then subtract.

Here, you need to "take apart" the 8 to make your 15 jelly beans 10, then you subtract the remainder of 8 to get your solution. In other words,

--"take apart" 8 into 5 and 3 (because you're going to need a 5 to make 15 into 10). 15 minus 5 equals 10. HOORAY! You have your 10. Now, subtract the remaining 3. 10 minus 3 equals 7. Huzzah--your final answer!

On paper, the problem looks like this:

15 - 8 (5, 3) = ?

15 - 5 = 10

10 - 3 = 7

So...15 - 8 = 7

4 0

3 years ago

I need help on exponets

atroni [7]

Answer:

i so exponets are numbers that can go into anything

Step-by-step explanation:

i just told you

6 0

3 years ago

Don tracked the price of gas for several months. In January gas cost $2.65, in February the price had risen $0.56, in March decr

Elan Coil [88]

Starting price is 2.65, increased by .56

2.65+.56=3.21

Price is 3.21, decreased by .23

3.21-.23=2.98

Price is 2.98, increased by 1.02

2.98+1.02= 4

Price is 4, decreased by .48

4-.48=3.52

Now find the difference from the starting price (January) from the end price (May)

3.52-2.65=.87

The difference from gas prices is $.87

8 0

3 years ago