Question

3.82 × 0.51
7.56 ÷ 0.9
18 - 3.584

Explanation:

Step1: Calculate \( 3.82 \times 0.51 \)

Multiply the numbers as if they were whole numbers: \( 382 \times 51 = 19482 \). Then, count the total number of decimal places in the factors (2 + 2 = 4). So, \( 3.82 \times 0.51=\frac{19482}{10000}=1.9482 \).

Step2: Calculate \( 7.56 \div 0.9 \)

Multiply both the dividend and the divisor by 10 to make the divisor a whole number: \( (7.56\times10)\div(0.9\times10)=75.6\div9 \). Then, \( 75.6\div9 = 8.4 \).

Step3: Calculate \( 18 - 3.584 \)

Subtract the decimal number from the whole number: \( 18.000 - 3.584 = 14.416 \).

Answer:

\( 3.82 \times 0.51 = 1.9482 \), \( 7.56 \div 0.9 = 8.4 \), \( 18 - 3.584 = 14.416 \)