WHAT HAVE I LEARNED
1. Put the tasks to the right order so that
next task begin with answer of last task.
Example: 4 200 + 3 700 = 7 900, 8 600 - 2 300 =
2. Calculate by heart! Check the answer!
| 160 : 4 = .......... 210 : 7 = .......... 810 : 9 = .......... 480 : 6 = .......... 240 |
2 · 500 = .......... 4 · 600 = .......... 8 · 500 = .......... 9 400 |
3. Calculate by heart! 70 · 10 : 100 · 20 = .......... 4 200 : 200 : 3 · 5 = .......... 10 · 2 070 : 100 = .......... |
4. Compare! 20 · 6 * 20 · 5 + 20 4 010 * 4 000 + 10 · 1 (200 + 300) : 5 * 40 50 : 2 + 50 * 50 + 25 |
5. Find the letters!
| 900 - a · 100 = 0 a · 100 = .................... a · 100 = .......... a = .................... a = .......... |
800 + b : 10 = 900 b : 10 = .................... b : 10 = .......... b = ..................... b = .......... |
6. True (T) or false (F)!
(900 + 30 + 6) - 336 < 330 + 260 ..........
800 - 450 > 800 - 200 - 50 ..........