 It is always important
to make sure your solution to a problem is correct. That is what is
meant when teachers say "check your work." Now you can check
yourself or exchange with someone else to have him/her check it.Example 1:
 |
If b =4, evaluate for
each expression below:
(5+b)x3
4+7b-2
10x(b-2) |
|
|
Verify
Each step along
the way, You should ask yourself, "Is this correct?"
Remember your
"Order of Operations"
Example
2:
 |
Write an equation to
find out how many golf balls Ed has, then solve. Ed and
Rachael have 21 golf balls. Rachael has 8 golf balls. How
many golf balls does Ed have? |
|
| |
|
Equation |
Step 1: We know the sum of the golf balls is 21.
r+e=21
Step 2: We know Rachael has 8 golf
balls. So 8 is an addend.
8+e=21
Step 3: 8+e=21 is the equation |
|
Solution |
Step
1: 8+e=21 Solve by using the inverse
operation
Step 2: 8+e=21
-8
-8
e=13
Step 3:
The solution is e=13 |
|
Verify |
Step 1: Put 13 in place of the "e."
Step 2: 8+13=21 Eight plus thirteen does equal twenty-one
|
| |
Let's Practice
|
