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Practice set on decimal fraction - general questions

Score:  030
1. 

Evaluate :(2.39)2 - (1.61)2
2.39 - 1.61

2. 

What decimal of an hour is a second ?

3. 

The value of(0.96)3 - (0.1)3is:
(0.96)2 + 0.096 + (0.1)2

4. 

The value of0.1 x 0.1 x 0.1 + 0.02 x 0.02 x 0.02is:
0.2 x 0.2 x 0.2 + 0.04 x 0.04 x 0.04

5. 

If 2994 ÷ 14.5 = 172, then 29.94 ÷ 1.45 = ?

6. 

When 0.232323..... is converted into a fraction, then the result is:

7. 

.009= .01
?

8. 

The expression (11.98 x 11.98 + 11.98 x x + 0.02 x 0.02) will be a perfect square for x equal to:

9. 

(0.1667)(0.8333)(0.3333)is approximately equal to:
(0.2222)(0.6667)(0.1250)

10. 

3889 + 12.952 - ? = 3854.002

Lecture Notes