[email protected] FOR MORE E-RESOURCES CALL: 0705525657/0770195807 2 FORM 1 TOPIC 1 NUMBERS PAST KCSE QUESTIONS ON THE TOPIC 1. Mogaka and Onduso together can do a piece of work in 6 days. Mogaka, working alone, takes 5 days longer than Onduso. How many days does it take Onduso to do the same work alone? 2. (a) Evaluate -8 2 + 12 x 9-4 x 6 56 7 x 2 (b) Simplify the expression 5a – 4b – 2(a-(`2b+c) 3. Evaluate 28-(-18) – 15 –(-2)(-6) -2 3 4. Three people Odawa, Mliwa and Amina contributed money to purchase a flour mill. Odawa contributed 1 /3 of the total amount, Mliwa contributed 3 /8 of the remaining amount and Amina contributed the rest of the money. The difference in contribution between Mliwa and Amina was Kshs 40000. Calculate the price of the flour mill. 5. Evaluate: -12 (-3) x 4 – (-20) -6 x 6 3 + (-6)
[email protected] FOR MORE E-RESOURCES CALL: 0705525657/0770195807 4 12. Without using mathematical tables or calculators, evaluate 3 675 x 135 2025 13. All prime numbers less than ten are arranged in descending order to form a number (a) Write down the number formed (b) What is the total value of the second digit? 14. Evaluate without using mathematical tables or a calculator 0.0084 x 1.23 x 3.5, 2.87 x 0.056 Expressing the answer as a fraction in its simplest form. 15. Evaluate 1 /3 of (2 3⁄4 - 5 1⁄2 ) x 36 /7 9 /4 16. Evaluate without using mathematical tables or the calculator (.0.0625 x 2. 56) 0.25 x 0.08 x 0.5 17. Evaluate without using mathematical tables or the calculator 1.9 x 0.032 20 x 0.0038 18. Evaluate 2 3⁄4 x 8 /33 3 + (52 /5 9 /25)
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