Page 30 - ICSE Math 6

11. A vessel has 5 L 500 mL of milk shake. How many glasses each of capacity 50 mL, can be filled
by the vessel?
12. Estimate and compare with the actual sum: (a) 760 + 683 (b) 9,864 + 2,349
13. Estimate the product of 367 × 540 by rounding off each number to its nearest hundreds.

14. Find the estimated quotient for 473 ÷ 19.
15. A multinational company imported 78,000, 81,347 and 90,189 cars in three consecutive years.
How many cars in all were imported during these three years?
16. A family is planning for a vacation. The two places they selected will cost them ` 1,68,000 and
` 1,19,500. Estimate the money the family will save if they choose the cheaper place for
vacation.

THINK SMART

1. Praveen writes the greatest 5-digit number using two different digits. Does his number smaller
than 54,299? Give reasons.
2. By interchanging which two digits in 23,465, will you get a number greater than 54,179?

3. Form the largest 6-digit and the smallest 4-digit numbers using each of the digits 3, 7 and 9 at
least once. Write the expanded form of their difference.

Group Activity

Objective: To learn about place value of digits
Material required: Flash cards numbered 0 to 9
Directions: Try to build the greatest number
• Divide the class into groups. Give flash cards with digits from 0 to 9 to each group.
• Fold ten slips with digits 0 to 9 written on them and put in a box.
• Pick a slip and read the digit.

• Student from each group holding the flash card of the digit called out will take position of
their choice marked U (unit), T (ten), H (hundred), Th (thousand), TTh (ten thousand) on
the floor designated for their group.

8 4 0

TTh Th H T U

• The procedure is repeated till all the five slots are occupied by the students. The positions
once taken cannot be changed or interchanged with others.
Result: The group with the greatest number formed wins the game and the one with the
second highest number comes second. The group with next number in descending order is
third and so on. The group with the smallest number comes last.

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