By looking at the above examples, can you frame a rule to multiply. Class 7

By looking at the above examples, can you frame a rule to multiply. Class 7

Question 1.

By looking at the above examples, can you frame a rule to multiply two decimals? Class 7

Solution:

Yes. Multiply the given decimals as natural numbers and put the decimal point in the product to the right at the sum of decimal places of the two numbers.

Question 2.

When is the product of two decimals greater than both the numbers? When is it less than both the numbers? Class 7

Solution:

Product is greater than both the numbers, when each of the given numbers is greater than 1. It is less than both the given numbers, if each number is less than 1.

Question 3.

Recall that a tenth is 0.1, a hundredth is 0.01, and so on. Find the following products in tenths, hundredths and so on: Class 7

Solution:

(a) 6 × 4 tenths = 24 tenths

(b) 7 × 0.3 = 21 tenths

(c) 9 × 5 hundredths = 45 hundredths