ADD WHOLE NUMBERS, ADD DECIMALS
PROBLEMS
To see the answer, pass your mouse over the colored area.
To cover the answer again, click "Refresh" ("Reload").
Do the problem yourself first!
a) What does the carried 1 signify? 1 ten.
b) What does the carried 2 signify? 2 hundreds.
| 12. | Add. | |||||||
| a) | 9,456 | b) | 8,767 | c) | 6,997 | d) | 9,654 | |
| 3,877 | 3,998 | 5,487 | 9,887 | |||||
| 6,798 | 9,546 | 8,658 | 6,795 | |||||
| 20,131 | 22,311 | 21,142 | 26,336 | |||||
13. Alignment. Which digit is in the ones place?
13. a) 2,346 6 b) 2.346 2 c) 234.6 4
13 d) 0.2346 0 e) .2346 0
14. Write these in a column and add. (Align the ones.)
14. a) 346 + 7845 + 8 + 24 = 8,223
14. b) 22,309 + 66 + 5 + 789 = 23,169
14. c) 15.75 + .86 + 2.04 = 18.65
14. d) 4,036 + 8 + 3.504 = 4,047.504
14. e) 32 + 3.2 + .32 = 35.52 f) 2.039 + 1 = 3.039
14. g) 9.8 + 13.97 + 6 + .35 = 30.12 h) .4 + .52 + .697 = 1.617
15. Before adding, is it possible to know how many decimal places a sum
15. will have?
Yes. It will have the same number of places as the numbers being added.
16. Add mentally.
16. a) .6 + .6 + .6 = 1.8 b) .06 + .06 + .06 = .18
16 c) .05 + .07 + .09 = .21 d) .8 + .2 + .7 + .5 = 2.2
17 Rudolph and Charles went on a trip; the first day they went 67 miles;
19. the second day, 38.35 miles; and
the third day, 98.9 miles. In the
19. three days, how far did they travel? 204.25 miles
18. Every day John uses 5.5 gallons of gasoline, Rose uses 6.08 gallons,
18. and Aaron uses 11 gallons. How many gallons do the three of them
18. use in ten days? 225.8 gallons
9. Margot has thirty-six dollars in the bank, Camilla has one thousand
10. seventy-nine dollars and fifty-seven cents, and Joe has thirty-nine
9. cents. How much do the three of them have together? $1,115.96
10. The base of a rectangle is 18 cm, and its height is 9.7 cm. How long 10. is its perimeter? 55.4 cm
Continue on to the next Lesson.
or
Return to the previous section.
Please make a donation to keep TheMathPage online.
We do not accept advertising. Even $1 will help.
Copyright © 2001-2007 Lawrence Spector
Questions or comments?
E-mail: themathpage@nyc.rr.com