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# Knowing Our Numbers CBSE Class 6

## Full fledge assessment Videos

Video Based Test funda (Please watch the above videos before attempting this assessment)
Question 1/20

Q 1. The place value of 5 in 6584 is

Solution

The place value of 5 in 6584 is 500.

Q 2. The sum of 156 and 87 to the nearest hundreds is

Solution

156 rounded to the nearest hundred is 200.

87 is rounded to the nearest hundred.

Hence, 200 + 100 = 300.

Q 3. Subtraction and division are not

Solution

Subtraction and division are neither commutative nor associative.

Q 4. Which one is the smallest among 9998, 9997, 9978, 9999?

Solution

9978 < 9997 < 9998 < 9999

Hence, 9978 is the smallest among the given numbers.

Q 5. Commas are used to mark

Solution

Commas are used to mark thousands, lakhs and crores.

Q 6. _____ distinct 3-digit numbers can be formed using the digits 3, 2, 8 once without repetition.

Solution

6 distinct 3-digit numbers (i.e. 328, 382, 283, 238, 832, 823) can be formed using the digits 3, 2, 8 once without repetition.

Q 7. Estimate the nearest to thousand for 1874 + 2452.

Solution

1874 rounded to the nearest thousand is 2000.

2452 rounded to the nearest thousand is 2000.

Hence, 2000 + 2000 = 4000.

Q 8. Which of the following Roman numerals can be subtracted from V and X only?

Solution

The Roman numeral I can be subtracted from V and X only.

Q 9. Estimate 942 × 745 rounded to the nearest hundred.

Solution

942 rounded to the nearest hundred is 900.

745 rounded to the nearest hundred is 700.

Hence, 900 × 700 = 630000.

Q 10. Represent the number 92 in Roman numerals.

Solution

92 = 90 + 2 = XC + II = XCII

Q 11. The sum of 769 and 440 to the nearest tens is

Solution

769 rounded to the nearest tens is 770.440 rounded to the nearest tens is 440.

Hence, 770 + 440 = 1210.

Q 12. Which of the following numbers has no Roman numeral?

Solution

There is no Roman numeral for zero.

Q 13. The sum of 3567 and 6548 to the nearest tens is

Solution

3567 rounded to the nearest tens is 3570.

6548 rounded to the nearest tens is 6550.

Hence, 3570 + 6550 = 10120.

Q 14. 676 on rounding to the nearest hundred is equal to

Solution

676 on rounding to the nearest hundred is 700.

Q 15. Estimate 125 × 297.

Solution

125 rounded to the nearest hundred is 100.

297 rounded to the nearest hundred is 300.

Hence, 100 × 300 = 30000.

Q 16. A number divided by zero is

Solution

A number divided by zero is not defined.

Q 17. How many lakhs make a million?

Solution

10 lakhs = 1 million

Q 18. Which of the following numbers is not used in the international system of numeration?

Solution

10 thousand is used in the Indian system of numeration.

Q 19. Which of the following is used in the Indian numeration system?

Solution

Thousand, lakh and crore are used in the Indian numeration system.

Q 20. Which of the following Roman numerals represents the number 19?

Solution

A less valued Roman numeral written to the left of the greater valued Roman numeral subtracts its value from that of the greater value.

10 is denoted by X and 9 is denoted by IX. Hence, 19 is denoted by XIX.

Still have doubt?

## Knowing Our Numbers Notes

#### Revision Notes

Read CBSE Class 6 Mathematics revision notes for Knowing Our Numbers

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## Knowing Our Numbers Doubts and Solutions

Asked by arthur.ashe49 30th November 2019, 8:41 AM