Add or subtract the following measurements. Be sure each answer you enter contains the correct number of significant digits.
17.600ml+14.57ml= ml
4.8ml+ 1.620 ml = ml
12.570ml-11.60ml= ml
17.600ml + 14.57ml = 32.170 ml
4.8ml + 1.620 ml = 6.420 ml
12.570ml - 11.60ml = 0.970 ml
To add or subtract measurements with the correct number of significant digits, follow these steps:
1. For addition, align the decimal points of the measurements and add normally.
For subtraction, write the measurements one above the other with the decimal points aligned.
For the first calculation, 17.600 ml + 14.57 ml:
```
17.600 ml
+ 14.57 ml
____________
```
Add the numbers: 17.600 + 14.57 = 32.170 ml.
So, 17.600 ml + 14.57 ml = 32.170 ml.
2. For the second calculation, 4.8 ml + 1.620 ml:
```
4.8 ml
+ 1.620 ml
___________
```
Add the numbers: 4.8 + 1.620 = 6.420 ml.
Since the measurement 4.8 ml has only 2 significant digits, the final answer must also have 2 significant digits. Therefore, 4.8 ml + 1.620 ml = 6.4 ml.
3. For the third calculation, 12.570 ml - 11.60 ml:
```
12.570 ml
- 11.60 ml
___________
```
Subtract the numbers: 12.570 - 11.60 = 0.970 ml.
So, 12.570 ml - 11.60 ml = 0.970 ml.
To summarize:
17.600 ml + 14.57 ml = 32.170 ml
4.8 ml + 1.620 ml = 6.4 ml
12.570 ml - 11.60 ml = 0.970 ml