To all students - Form 1H & 1S, do this exercises in Maths Book 1. (Tues-3Feb09)
Answer all questions :
1. 45 – 35 + 70 =
2. – 30 + 25 + 40 =
3. 50 – 68 – 67 + 50 =
4. – 55 + 50 – 60 + 30 =
5. – 40 – 57 – 28 – 60 =
6. 80 + 30 – 150 – 230 =
7. 145 – 315 + 170 =
8. – 130 + 125 + 410 =
9. 502 – 168 – 670 + 150 =
10. – 515 + 150 – 610 + 310 =
11. – 140 – 157 – 128 – 610 =
12. 810 + 310 – 450 – 230 =
13. 245 – 325 + 270 =
14. – 320 + 225 + 420 =
15. 520 – 682 – 267 + 520 =
16. – 525 + 520 – 620 + 320 =
17. – 430 – 357 – 328 – 630 =
18. 830 + 330 – 350 – 730 =
19. 1520 – 6182 – 1267 + 1520 =
20. – 5215 + 5210 – 6210 + 3120 =