Top

# Decimal Fractions

1.

(i) 6202.5 + 620.25 + 62.025 + 6.2025 + 0.62025

(ii) 5.064 + 3.98 + 0.7036 + 7.6 + 0.3 + 2

No answer description available for this question.

Enter details here

2.

$$3889 + 12.952 - ? = 3854.002$$

Let $$3889 + 12.952 - x = 3854.002$$
Then,
$$x = (3889 + 12.952) - 3854.002\\ = 3901.952 - 3854.002\\ = 47.95$$

Enter details here

3.

Which of the following fractions is less than 7/8 and greater than 1/3 ?

No answer description available for this question.

Enter details here

4.

Convert the following into vulgar fraction: (i)0.75(ii)3.004(iii)0.0056

No answer description available for this question.

Enter details here

5.

Evaluate: $$\dfrac{3.8^2 - 1.2^2}{3.8 - 1.2}$$

$$a^2 - b^2 = (a - b)(a + b)$$
$$\dfrac{3.8^2 - 1.2^2}{3.8 - 1.2} \\~\\= \dfrac{(3.8 + 1.2)(3.8 - 1.2)}{(3.8 - 1.2)}\\~\\ = 3.8 + 1.2 \\~\\= 5$$

Enter details here

6.

What is difference between biggest and smallest fraction among $$\dfrac 23, \dfrac 34, \dfrac 45$$ and $$\dfrac 56$$ ?

$$\dfrac 23=0.66\\ \dfrac 34=0.75\\ \dfrac 45=0.8\\ \dfrac 56=0.833$$

So biggest is $$\dfrac 56$$ and smallest is $$\dfrac 23$$
Their difference is $$\dfrac 56 - \dfrac 23 = \dfrac 16$$

Enter details here

7.

The [removed]11.98 x 11.98 + 11.98 x x + 0.02 x 0.02) will be a perfect square for x equal to:

No answer description available for this question.

Enter details here

8.

The [removed]11.98*11.98+11.98*x+0.02*0.02) will be a perfect square for x equal to:

No answer description available for this question.

Enter details here

9.

4211.01 + 22.261 - ? = 2645.759

Required Value
$$= 4211.01 + 22.261 - 2645.759$$
$$= 1587.512$$

Enter details here

10.

Find the product: (i) 2.61 * 1.3(ii) 2.1693 * 1.4(iii) 0.4 * 0.04 * 0.004 * 40