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Fractions and Decimals

Fractions and Decimals
13.065 x 13.065 - 3.065 x 3.065 =?

1613
16.13
1.613
161.3

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Given expression =(13.065)²-(3.065)² =(13.065 + 3.065) x (13.065 - 3.065)=16.13 x 10 = 161.3

Fractions and Decimals
The place value of 3 in 0.07359 is ?

0.03
0.0003
0.003
0.3

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The place value of 3 in the given decimal fraction is .003 i.e. 3/1000.

Fractions and Decimals
0.008 x 0.3 = ? a) 0.24 b) 0.0240 c) 0.204 d) 0.0024

0.00024
0.024
0.24
0.0024

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Given expression is, 0.008 x 0.3The multiplication value without decimal point = 8 x 3 = 24Sum of the number of decimal places in the given numbers = 3 + 1 = 4Now, in the product, the decimal point is marked off to obtain as many places of decimal.Then the answer is 0.0024.

Fractions and Decimals
3.5 + 21 x 1.3 = ?

24.8
28.8
30.8
26.8

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Given Expression = 3.5 + 21 x 1.3 = 3.5 + 27.3 = Given Expression = 3.5 + 21 x 1.3 = 3.5 + 27.3 = 30.8

Fractions and Decimals
Evaluate : [(2.39)² - (1.61)²] / [2.39 - 1.61]

3
4
6
2

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Given Expression=(a² - b²) / (a - b)=[(a + b)(a - b)] / (a - b)= (a + b)= (2.39 + 1.61)= 4 

Fractions and Decimals
What decimal of an hour is a second

0.0028
0.0026
0.0025
0.0027

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

1 / (60 * 60) = 1 / 3600 = .0027

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