Find the value of:

17. Y2.5 + .324 + 5.07 23. 6.08 + .027 — 4.44

18. 61.3 + 2.79 + .008 24. 8.72 + .80eS — .75

19. 26.7 + 41.3 + .802 25. 3.60 + 34.2 — .016

20. 5.34 + .534 + 53.4 26. .542 + 7.61 — 3.25

21. .016 + 0.16 + .024 27. 9.27 — 3.45 — .005

22. 7.03 + .300 + 5.04 28. .172 + 61.5 — 2.64

Multiplication and Division.
366. How many tenths are 5X6 tenths? 30 tenths
are equal to how many ones? 3.0 = 30 tenths.
How many tenths are 8 X 5 tenths? 40 tenths =

ones.
5 X .6 = 30 tenths, or 3. 8X5 tenths = 40 tenths, or 4.
In 25 tenths, how many ones and tenths?

1. Multiply 4.2 by 6.
^2 6X2 tenths = 12 tenths, or 1.2. Where do we write

'n the 2? What is done with thel? Do we multiply as

in whole numbers ? How many decimal places in the



25.2 factors ? How many in the product ?

There must he as many decimal places in the product as
there are in both factors.
Find the products:



2.
6X3.7


7. 2 X .24


3.
7X2.3


8. 5 X .13


4.
4X5.6


9, 4 X .23


5.
6X1.7


10. 7X.14


6.
8X4.2


11. 8 X .06



12,


4 X 1.36


13.
7 X 3.35


14.
3 X 8.72


15.
.12 X .48


16.
2.4 X 1.2



DBOtMAL FBAOnoNS.
267



17. Multiply .14 by


•7.
•14 7 X 14 = 98,


only two places. What must we do


• 7 to make three places ? How do we know there should


fjQQ be three decimal


places?


Find the products:




18. .5X.5 23.
