PROBLEMS

Do the problem yourself first!

a)  What does the carried 1 signify?   1 ten.

b)   What does the carried 2 signify?  2 hundreds.

 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 digits the
15.  sum will have?

Yes. It will have the same number as the numbers being added.

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.

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