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E:\Working\Brother_Education\Preparatory_Stage_Maths-3_(11-09-2024)\Open_Files\CHAP_02
\ 02-Nov-2023 Sonia Suyal Proof-1 Reader’s Sign _______________________ Date __________

5. H t O H t O 6. H t O H t O

9 2 round off 8 2 round off
+ 4 6 round off + + 4 6 round off +

Actual Sum____________Estimated Sum Actual Sum___________Estimated Sum

word problems
Remember
Let us learn the steps for solving word problems. Learn the mnemonic to remember

r — Read the steps for solving word problems.
“Red Ugly Dragon Sings Loudly.”
U — Understand (the problem)
d — Decide (the strategy -which mathematical operation required)

S — Solve

L — Look back (check the solution)

example 1: Mohit bought a DVD player for `3545 and a printer for `5499. How much

money did he spend?
Solution: to Understand: The cost of a DVD player and a printer is given. We have to

find the total money Mohit spent.

to decide: To find the total money spent, we need to add the cost of both items.

th H t O th H t O

to Solve: Cost of DVD player (in `) = 3 5 4 5 5 4 9 9
Cost of printer (in `) = + 5 4 9 9 + 3 5 4 5
Total amount spent (in `) = 9 0 4 4 9 0 4 4

To lookback (checking): Changing the order of the addtion.

Thus, Mohit spent `9044.

example 2: 5735 boxes have been put in a truck. 437 more boxes can be put in it. What
is the total number of boxes that can be put in the truck?

Solution: th H t O
Number of boxes put in a truck = 5 7 3 5
Number of more boxes that can be put in the truck = + 4 3 7

Total number of boxes = 6 1 7 2

Thus, 6172 boxes can be put in the truck.

Mathematics-3 45