Multiplication of Decimal Numbers through Grid or Area Model

Q. Find $0.4\times 0.6$ using decimal grid value method.

1. 0.18
2. 0.32
3. 0.22
4. 0.24

Q. (a) It is said that the weight of a body on the moon is ${\frac{1}{6}}^{th}$ of its weight on earth. Calculate the weight of a car on the moon if it weighs 420 kg on Earth.
[4 MARKS]

(b) What is the fraction of coloured squares to the total number of squares? State your answer in decimals also.

Q.

A rectangle with length and breadth equal to 19 m and 17 m respectively has to be converted to a square with equal area. What will be the side of the square? (Give answer till two decimal places).

1. 17.97

2. None of these

3. 16.93

4. 15.98

Q.

What will be the value obtained from the given multiplication of the following area model?​
\begin{tabular}{|l|l|l|} \hline & & \\ \hline \hline \end{tabular}

1. 4.61
2. 4.62
3. 4.64
4. 4.63

Q. Find the value of $\sqrt{5\frac{1}{5}}$ correct upto $2$ decimal places.

1. $2.29$
2. $2.28$
3. $2.30$
4. $2.27$

Q. How many seven letter words can be formed using the letters of the word ${}^{\prime }BELFAS{T}^{\prime }$?

1. $2025$
2. $5040$
3. $1040$
4. $1250$

Q. Find the HCF of the following numbers, using the division method:
$1794,2346,4761$

Q. By what number should we multiply (-5/4) to get 7/2?

1. -7/5
2. -14/5
3. -7/10
4. -28/5

Q. The reciprocal value of 5/10 is

1. 2
2. 5
3. 10
4. 0.5