Page 48 - Math Genius C3

E:\Working\Orange_Education\Math_Genius_3\Open_Files\CHAP_02
\ 01-Oct-2025 Bharat Arora Proof-10 Reader’s Sign _______________________ Date __________

practice time 2h

Solve the following word problems

1. Radha has ₹125 and Rishi contributes ₹170 to buy a gift for their mother. What is the

cost of the gift?

2. Jenny’s school is planting flowers in school on World Earth Day. They will plant 114
daffodils, 11 tulips, and 1119 marigolds. How many flowers will they plant in all?

3. A school library has 1234 Hindi storybooks, 2356 English storybooks and 2220 Art

and Craft books. How many books are there in the school library?

4. A company manufactured 4617 bicycles in a year. If 2500 more bicycles were

manufactured in the next year, how many bicycles were manufactured in both years?

5. In a village, there are 4265 men, 4075 women and 1570 children. What is the total
number of people in the village?

6. A balloon seller has 248 red balloons and 173 green balloons. Estimate the total

number of balloons by rounding to the nearest 10. Is the total number of balloons

more than 400 or less than 400?

Mind Map
math Creative Thinking
ADDITIon

Exploring Addition Addition of 3-digit numbers Addition of 4-digit numbers

By expanding both the numbers. With regrouping Without regrouping
Example: 145 = 100 + 40 + 5 = 657 Example: Example:
+512 = 500 + 10 + 2 623 + 358 = 981 2326 + 1253 = 3579
With regrouping
Addition Properties Example:

Property of 0 Estimating the Sum 3456 + 6345 = 9801
Example: 1235 + 0 = 1235 It is a rough calculation to find the
Property of 1 sum of the given numbers.
Example: 2315 + 1 = 2316 Example: Actual Estimated
Adding 10 to a number Sum Sum order of Addition
Example: 3235 + 10 = 3245 H t O H t O Changing the order of the addends
Adding 100 to a number does not change the final sum.
Example: 4230 + 100 = 4330 1 4 9 1 5 0 243 + 125 = 125 + 243
Adding 1000 to a number + 3 5 + 4 0
Example: 5235 + 1000 = 6235 1 8 4 1 9 0

46 Mathematics-3