Divide by 5
for 4th grade

Mental method to divide by 5

There is a fun and simple technique to divide numbers by 5 using mental calculation. This will be a handy skill you can use in your everyday life, and it's especially helpful when you don't have a calculator around.

First, let's understand what dividing by 5 means. When we divide a number by 5, we're splitting that number into 5 equal parts. For example, if we have 20 apples and want to divide them equally among 5 friends, each friend would get 4 apples (because 20 divided by 5 is 4).

Here are the simple steps to dividing by 5:

• Multiply the number you want to divide by 2.
• Move the decimal point one place to the left.

Example 1: divide 30 by 5

• Step 1: Multiply 30 by 2: 30 x 2 = 60
• Step 2: Move the decimal point 1 place to the left: 60 becomes 6.0

So, 30 ÷ 5 = 6

Example 2: divide 145 by 5

• Step 1: Multiply 145 by 2: 145 x 2 = 290
• Step 2: Move the decimal point 1 place to the left: 290 becomes 29.0

So, 145 ÷ 5 = 29

Example 3: divide 14 by 5

• Step 1: Multiply 14 by 2: 14 x 2 = 28
• Step 2: Move the decimal point 1 place to the left: 28 becomes 2.8

So, 14 ÷ 5 = 2.8

This topic asks you to calculate division by 5 for each given number. The numbers to divide range from 5 up to 250.

Related topics

• Divide by 10
• Divide by 100
• Divide by 1000