Fraction: 1 Mark
Decimal: 1 Mark
There are 100 squares. 46 out of them are coloured. This picture shows forty-six hundredths.
To write 46 hundredths as a decimal, we use a place value chart.

The answer is 0.46.

Place values: 1 Mark each
1.

$\begin{array}{ccccc}\text{Hundreds}& \text{Tens}& \text{Ones}& \text{Tenths}& \text{Hundredths}\\ 5& 6& 4& 1& 3\end{array}$
2. 
$\begin{array}{ccccc}\text{Tens}& \text{Ones}& \text{Tenths}& \text{Hundredths}& \text{Thousandths}\\ 4& 2& 1& 4& 6\end{array}$

Since Dolly gave Rs.3.20 to Shivam, subtract that amount from the money she has.

Rs.15.50 - Rs.3.20 = Rs.12.30.

Each option: 1 Mark
1) $62.5-4.13+7.48-1.2=64.65$
2) $(2.7\times 4.1)-(3.5\times 1.7)=5.12$
3) $(0.07\times 100)+(21.5\times 2)=50$
4) $5.07+1.53-4.014=2.586$

Expressions: 1 Mark each
i) Forty-one hundredths
ii) One and sixty-two hundredths
iii) Two and five tenths

Descending order: 1 Mark each
1)  7.3 > 7.2 > 6.2 > 5.1 > 1.6
2)  1.4 > 1.04 > 1.004 > 1.0004 > 1.00004
3)  7.3 > 7.02 > 6.2 > 1.1 > 0.6

Product: 1 Mark each
1) $2.7\times 6.1=16.47$
2) $2.8\times 0.14=0.392$
3) $2.6\times 3.14=8.164$
4) $0.08\times 6.22=0.4976$

Arithmetic operations: 1 Mark each
i) 0.22 + 1.0052 = 1.2252
ii) 1.723 - 0.546 = 1.177 
iii) 1.42 $\times$ 9.24 = 13.1208
iv) 0.52 + 0.48 = 1.0

Decimal forms: 1 Mark each
1. Nine-tenths = 0.9
2. Five and seventy-eight hundredths = 5.78
3. Three and two thousandths = 3.002
4. Four and nine hundredths = 4. 09