Multiplication by Ten, Hundred and Thousand

To multiply a number by 10, 100, or 1000 we need to count the number of zeroes in the multiplier and write the same number of zeroes to the right of the multiplicand.


Rules for the multiplication by 10, 100 and 1000:

● If we multiply a whole number by a 10, then we write one zero at the end of the multiplicand.

For example:

1275 × 10 = 12750

● If we multiply a whole number by a 100, then we write two zeros at the end of the multiplicand.

For example:

1275 × 100 = 127500


● If we multiply a whole number by a 1000, then we write three zeros at the end of the multiplicand.

For example:

1275 × 1000 = 1275000


●  To multiply a number by a multiplier having zero and non-zero part, we put as many zeroes in the product as in the multiplier and then multiply the number by non-zero part.

For example:

1275 × 20 = 25500

1275 × 300 = 382500

1275 × 5000 = 6375000

Rules for the Multiplication by 10, 100 and 1000.

You can even keep the above chart for further reference. 


Questions and Answers on Multiplication by Ten, Hundred and Thousand

1. Compare the given wheels by writing the product in the outermost circle.

(i)

Multiplication of Whole Numbers Table


Answers:

Multiplication of Whole Numbers Table Answer

(ii)

Multiplication Table of Whole Numbers


Answers:

Multiplication Table of Whole Numbers Answer

(iii)

Whole Numbers Multiplication Table


Answers:

Whole Numbers Multiplication Table Answer

(iv)

Multiplication Table Whole Numbers

Answers:

Multiplication Table Whole Numbers Answer

2. Find the missing multiplicand in each of the following questions.

(i) ……………… × 40 = 36000

(ii) ……………… × 500 = 7500000

(iii) ……………… × 700 = 77000000

(iv) ……………… × 9000 = 81000

(v) ……………… × 80000 = 96000000


Answers:

(i) 900

(ii) 15000

(iii) 110000

(iv) 9

(v) 1200

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