Number system 6.1.6 S

© 2009 -2011 tutorco.com 1 Q1. Write the numbers in standard form:-200,000 + 19,000 + 100 + 6 = Q2. Write the number in expanded form:-130,119 = Q3. Write the place value of the underlined the digit:-2,005 = Q4. {5, 7, 11, 13 and 17} are the examples of ______________ Q5. Fill in the blank:-_________ + 800 + 60 = 3,860 Q6. Simplify:-12 x (9 – 2) Q7. Compare the values and put the sign <, > or = a) 34,110,450 78,123,000 GRADE 6 TOPIC: NUMBER SYSTEM 6/1/6/S © 2009 -2011 tutorco.com 2 Q8. In PDMAS, what does each letter stand for? Q9. Complete the equation:-5__ 4 __ 184 = 185 (use the sign: -and +) Q10. Write the prime numbers between 1 to 20. Q11. Find the prime factorization:-28 Q12. Re-arrange the numbers and write in standard form:-30 + 4 + 700 + 8,000 + 900,000 = Q13. Find the value of:-12 -3 x (7 -5) + 9 © 2009 -2011 tutorco.com 3 Q14. Maria’s mom purchased 7 white t-shirts for Maria. She has 9 t-shirts of white color already in her cupboard, how many white t-shirts she has now? Q15. Simplify:-(14 -2) ÷ (9 + 3) Q16. The composite number with exactly 5 factors is: {Circle the correct answer} 16 14 8 None of above Q17. Draw the factor tree: 24 © 2009 -2011 tutorco.com 4 Q18. Write all the factors:-42 = 1, 2, ______, ______, ______, _______, _______, ________ Q19. Find the G.C.D of: 20 and 35 Q20. Find the L.C.M of: 12, 8 and 16 Q21. Fill the missing multiple:-90, 105, _____, 135,______, ______ Q22. Write the value of the underlined the digits and add their place value:-23,450 = © 2009 -2011 tutorco.com 5 Q23. The 1st number is 75 and the 2nd number is 120. If their GCD is 15 and their LCM is 600. Prove this:-1st number x 2nd number = G.C.D x L.C.M Q24. Write the number in expanded from in two ways: (in numbers and in words):-236,180 = Q25. Find the GCD and LCM of: 150, 140 and 20