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

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)

Answers:

(ii)

Answers:

(iii)

Answers:

(iv)

Answers:

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

● Operations On Whole Numbers

• Addition Of Whole Numbers.
• Word Problems on Addition and Subtraction of Whole Numbers
• Subtraction Of Whole Numbers.
• Multiplication Of Whole Numbers.
• Properties Of Multiplication.
• Division Of Whole Numbers.
• Properties Of Division.
• Word Problems on Multiplication and Division of Whole Numbers
• Worksheet on Addition and Subtraction of Large Numbers
• Worksheet on Multiplication and Division of Large Numbers
• Worksheet on Operations On Whole Numbers

5th Grade Math problems

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