Question

1. 39 × 28

Explanation:

Step1: Expand the numbers

We can write \(39\) as \((40 - 1)\) and \(28\) remains as it is. So the expression becomes \((40 - 1)\times28\).

Step2: Apply distributive property

Using the distributive property \(a\times(b - c)=a\times b - a\times c\), we have \(40\times28-1\times28\).

Step3: Calculate each product

\(40\times28 = 1120\) and \(1\times28 = 28\).

Step4: Subtract the results

Subtract \(28\) from \(1120\): \(1120 - 28=1092\).

Answer:

\(1092\)