Unit 1 Whole Number

Exercise 1
A Write the number in words.

1. 127030-
2. 540669-
3. 819311-

B Write the numbers in numerals.
1. Three hundred six thousand two hundred and eight-
2. Four hundred seventy-four thousand and one hundred-
3. Nine hundred twelve thousand five hundred and fifty-six-

C Write the place values and the values of the underlined digits.

Number	Place Value	Value of digit
178494	( )	( )
325160	( )	( )
553219	( )	( )
647783	( )	( )
800600	( )	( )

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D. Write the numbers in extended notation.
1. 463152= 400000 + () + 3000 + () + () + 2
2. 770981= () + () + 900 + 80 + ()
3.918627=9 hundreds+1 ten thousand+()+()+()+ 7 ones
4. 385064= () + () + 5 thousands + 0 hundreds + 6 tens + ()

E. Arrange the numbers in ascending order and descending order.
1. 196210,201690,169201,200196
Ascending order =>
Descending order=>
2.435348,443835,485433,434538
Ascending order =>
Descending order=>

F. Round off these numbers to the nearest thousand.
1. 195629 -
2. 554458 -
3. 672503 -
4. 802714 -

G. Round off these numbers to the nearest ten thousand.
1. 372965 -
2. 739841 -
3. 568027 -
4. 614608 -

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Objective Questions
1.What is the place value of digit 7 in the number 217304?
A Tens
B Hundreds
C Thousands
D Ten thousands

2.When 306904 is partitioned according to values of digits, it becomes
A 300000+6900+4
B 30000+6000+90+4
C 300000+6000+90+40
D 300000+6000+900+4

3.Which of the following has the largest value?
A 518018
B 511818
C 518081
D 511801

4.Round off 627149 to the nearest ten thousand.
A 620000
B 627000
C 630000
D 637000

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Subjective Questions
5.Write the number 150070 in words.





6.State the value of digit 4 in the number 840920.





7. 6 , 1 , 4 , 2 , 9 , 8
Using all the digits above,form the smallest number with digit 8 at the place value of hundreds.





8. 425210 , 315500 , 415201 , 395500 , 400025
Arrange the numbers above in ascending order.







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H. Add these numbers.
1.63845+723130=
2.319543+284127=
3.4203+13014+851760=
4.15113+502264+436192=

I. Find the total using the standard written method.
1.162036+1511+320112=
2.92709+146352+530634=




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J. Subtract the following.
1.593847-62631=
2.816724-508513=
3.709364-615143=
4.475369-135426=

K. Find the difference using the standard written method.
1.596847-234104-61532=
2.726654-311524-108104=
3.483656-51493-372028=

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L. Multiply.
1.62013x3=
2.75921x4=
3.50684x7=
4.29537x8=

M. Find the products.
1.25068x10=
2.73114x10=
3.1849x100=
4.9223x100=
5.645x1000=




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N. Do the following divisions.
1.93609÷3=
2.28194÷8=
3.419373÷9=
4.660378÷5=

O.Divide the following.
1.476838÷18=
2.136112÷26=
3.290000÷40=

P. Find quotients.
1.260270÷10=
2.872359÷10=
3.446800÷100=
4.193205÷100=

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Q.Calculate the following.
1.72x4÷9=
2.120÷8x3=
3.348x5÷12=
4.2096÷2x15=



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