Step 1 :To multiply two numbers, we need to multiply each digit of the first number with each digit of the second number.
Step 2 :To solve 5 x 7, we need to multiply the ones digit of 5 (which is 5) with the ones digit of 7 (which is 7)
Step 3 :5 x 7's ones digit is 5 x 7 = 35