Knowing Our Numbers — Chapter Test | Class 6 IMO

Q1

1 crore equals how many million?

1 crore = 10 million.

Q2

Which is the largest number?

1,00,00,000 (one crore) is the largest.

Q3

Which Roman numeral equals 400?

C before D means 500 − 100 = 400.

Q4

Round 7,852 to the nearest thousand.

The hundreds digit 8 is 5 or more, so it rounds up to 8,000.

Q5

What is the place value of 8 in 8,34,56,789?

8 is in the Crores place, so its value is 8,00,00,000.

Q6

10 lakh equals ___ in the International system.

10 lakh = 1 million.

Q7

Write 94 in Roman numerals.

94 = 90 + 4 = XC + IV = XCIV.

Q8

What number is DCCL?

500 + 100 + 100 + 50 = 750.

Q9

What is the expanded form of 50,407?

50,407 = 50,000 + 0 + 400 + 0 + 7.

Q10

A city's population is 12,45,678. Rounded to the nearest lakh, it is about ___ ?

The ten-thousands digit 4 is less than 5, so it rounds to 12,00,000.

Q11

A car costs ₹7,50,000. How much do 2 such cars cost?

7,50,000 × 2 = ₹15,00,000.

Q12

A truck travels 1,250 km on each trip. How far in 4 trips?

1,250 × 4 = 5,000 km.

Q13

What is the smallest 8-digit number minus the largest 7-digit number?

1,00,00,000 − 99,99,999 = 1.

Q14

What number is MMXXIV in Roman numerals?

MM = 2000, XX = 20, IV = 4, so 2024.