Add or subtract the following measurement be sure each answer you enter contains the correct number of significant digits
17.650mL-8.87mL=?ML
0.900mL+5.87mL=?ML
12.87mL+10.927mL=?ML
17.650 mL - 8.87 mL = 8.780 mL (The answer contains 4 significant digits)
0.900 mL + 5.87 mL = 6.77 mL (The answer contains 3 significant digits)
12.87 mL + 10.927 mL = 23.797 mL (The answer contains 5 significant digits)
To add or subtract measurements with correct significant digits, follow these steps:
1. For addition or subtraction, check that the decimal places (after the decimal point) are aligned.
- 17.650 mL
- 8.870 mL
___________________
2. Subtract the numbers in the same decimal place:
- 17.650 mL
- 8.870 mL
___________________
8.780 mL
So, 17.650 mL - 8.87 mL = 8.780 mL (answer to the correct number of significant digits).
Now, let's move on to the next calculation:
1. For addition or subtraction, check that the decimal places (after the decimal point) are aligned.
- 0.900 mL
+ 5.870 mL
_________________
2. Add the numbers in the same decimal place:
- 0.900 mL
+ 5.870 mL
_________________
6.770 mL
So, 0.900 mL + 5.87 mL = 6.770 mL (answer to the correct number of significant digits).
Finally, let's do the last calculation:
1. For addition or subtraction, check that the decimal places (after the decimal point) are aligned.
- 12.87 mL
+ 10.927 mL
__________________
2. Add the numbers in the same decimal place:
- 12.87 mL
+ 10.927 mL
_______________
23.797 mL
So, 12.87 mL + 10.927 mL = 23.797 mL (answer to the correct number of significant digits).