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KJSEA Grade 9 Mathematics revision paper set 3 - solved in video format

Round off to the nearest ten thousand. (1 mark)
5,890,123

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Questions/Lessons List

1. Express the number below in words.(1 mark) 10,897,801,555 ( free video lesson)

2. Round off to the nearest ten thousand. (1 mark) 5,890,123 ( free video lesson)

3. For the number below, state the place value and the total value of the underlined digit.(2 marks) 98,374,803,041 ( free video lesson)

4. In Gahumbwa Junior School, there are 156 boys and 199 girls. If 31 students transferred out at the start of the year, how many students remained in the school? ( free video lesson)

5. A mother divides a number of mangoes among her five daughters, giving each daughter 6 mangoes. If three mangoes are left, how many mangoes did she originally have? ( free video lesson)

6. Albert had 8910 bags of maize, each weighing 90 kg. She sold 5160 of them. a) How many kilograms of beans does she still have? (2 marks) b) After adding 468 more bags of beans, how many bags does she now have? (1 mark) ( free video lesson)

7. Three school bells ring at intervals of 30 minutes, 45 minutes, and 60 minutes. If they all ring together at 8:00 am, at what time will they next ring together? ( free video lesson)

8. Kyallo measured the temperature inside a deep freezer and found it to be 3°C, while the room temperature was 24°C. What was the difference in temperature between the room and the freezer? ( free video lesson)

9. Three boys shared a certain sum of money. The youngest received #1/12# of it, the next received #1/2# and the eldest received the remainder. a) What fraction of the total money did the eldest receive? (1 mark) b) If the eldest received Sh. 330, what was the original amount of money? ( free video lesson)

10. Express 0.35 as a fraction ( free video lesson)

11. Simplify. (2 marks) 3p + 6n - 2(p - 10p) ( free video lesson)

12. A father is three times as old as his son. In five years, the sum of their ages will be 58 years. What are their current ages? ( free video lesson)

13. A trader buys a bag of maize and sells it at a profit of Sh. 250. If the buying price was Sh. y, write an expression for the percentage profit in terms of y. ( free video lesson)

14. After spending ⁵/₆ of his December salary on school fees, Wafula was left with Sh. 3500. How much was his salary for the month? ( free video lesson)

15. Solve the following simultaneous equation using elimination method. (3 marks) 2x + y = 5 x – y = 1 ( free video lesson)

16. The rectangle below has a length that is 7 cm longer than its width, and a perimeter of 120 cm. a) What is the width of the rectangle? b) What is the area of the rectangle? (2 marks) c) If the cost of material used to make the rectangle is Sh. 30 per square centimeter (cm²), how much will the material for the entire rectangle cost? (2 marks) d) Two similar triangles are created from the rectangle. ( free video lesson)

17. Determine if the following numbers are divisible by 3. a) 3457 (1 mark) ( free video lesson)

18. Calculate the surface area of the figure below. ( free video lesson)

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