This chapter uses the theme of a transport museum to practise reading tables and charts, and to apply arithmetic (addition, subtraction, multiplication, division) to real-life information.
Reading Tables
A table organises information in rows and columns. Read across a row for details about one item and down a column for the same type of information about many items.
Solving Problems from Tables
- 1.Read the question carefully and find the right row/column.
- 2.Pick out the numbers you need.
- 3.Decide which operation (add, subtract, multiply, divide) to use.
Estimating and Rounding
- Rounding to nearest 10: If the ones digit is 5 or more, round up; otherwise round down.
- Rounding to nearest 100: If the tens digit is 5 or more, round up; otherwise round down.
- Estimation helps you check if your answer is reasonable.
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A museum has the following vehicles on display:
- Bicycles: 12, Buses: 8, Cars: 35, Trains: 5
How many vehicles in all?
12 + 8 + 35 + 5 = 60 vehicles
Tickets sold on Monday: 245. Tickets sold on Tuesday: 312. How many more tickets were sold on Tuesday?
312 - 245 = 67 more tickets
A toy train in the museum makes 6 rounds of the track each day. The track is 125 metres long. How far does it travel in a day?
6 x 125 = 750 metres
Entry fee is Rs 15 per child. On Saturday, 240 children visited. What was the total collection?
240 x 15 = Rs 3,600
360 visitors came on Sunday. They were split equally into guided tour groups of 9. How many groups were there?
360 / 9 = 40 groups
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Common mistakes
- Reading the wrong row or column in a table — always double-check the headings.
- Using the wrong operation — re-read whether the question asks for total (add), difference (subtract), each time (multiply/divide).
Summary
Tables help organise real-life data. Use the correct arithmetic operation based on what the question asks: totals use addition, differences use subtraction, repeated amounts use multiplication, and equal sharing uses division.