1. **Stating the problem:** Multiply the decimal numbers given in part (a): $0.2 \times 0.7$. 2. **Formula used:** Multiplication of decimals is done by multiplying the numbers as if they were whole numbers, then placing the decimal point in the product so that the total number of decimal places in the product equals the sum of the decimal places in the factors. 3. **Step-by-step calculation:** - Multiply $2 \times 7 = 14$ ignoring decimals. - Count decimal places: $0.2$ has 1 decimal place, $0.7$ has 1 decimal place, total 2 decimal places. - Place decimal point in $14$ to have 2 decimal places: $0.14$. 4. **Answer:** $$0.2 \times 0.7 = 0.14$$ This method applies similarly to all other decimal multiplications.