FRACTIONS

1. Multiply each the following numbers by 10 and 1000 !
a. 4.7
b. 8.62
c. 0.072
d. 0.00008
2. Do the following multiplications !
a. 8.9 x 7.6
b. 0.5 x 0.017
c. 4.05 x 3.17
d. 1.05 x 0.0046
e. 425 x 0.0648
f. 24.3 x 1.82
3. Do the following multiplications !
a. 6.9 x 400
b. 0.075 x 60,000
4. Find the area of a square whose side length is 8.7 cm !
5. Find the area of a rectangle whose length is 9.6 cm and width is 6.4 cm !
6. A number of coins are piled such as the figure at the left. If the thickness of each coin is 0.35 cm, find the height of the entire stack !
7. Divide each of the following decimals by 10 and 1.000 !
a. 4.326
b. 38.42
c. 0.83
d. 0.007
8. Divide each of the following decimals by 8 and 80 !
a. 25.6
b. 5.44
9. Divide :
a. 0.414 dengan 0.9
b. 4.32 dengan 0.18
10. Do the following divisions ?
a. 37.6 : 80
b. 27.6 : 400
11. The area of a rectangle is 29.24 cm2 and its length is 6.8 cm. Find is width !
12. The product of two numbers is 18.204. If one of the numbers is 2.46, what is the other number ?
13. Round the following decimals to two decimal place !
a. 1.2436
b. 9.0683
c. 0.08653
d. 15.0097
14. Round 0.20463 to:
a. four decimal places,
b. three decimal places,
c. two decimal places,
15. Round the following decimals to the nearest integers !
a. 3.7
b. 12.56
c. 27.129
d. 125.55
e. 1,250.9
f. 4,375.753
g. 10,015.15
h. 19,299.975