REVISION
1. Find the letters!
3 600 + 81 000 : 90 + 700 = a, a = ..........
5 680 - 64 000 : 800 + 800 = b, b = ..........
3 910 + 540 000 : 6 000 - 600 = c, c = ..........
b - 3 000 = c
2. Fill in the table!
3. Write the missing numbers!
| .......... · 20 = 200 .......... · 60 = 180 .......... · 40 = 200 .......... · 50 = 300 .......... · 80 = 800 |
30 · .......... = 600 10 · .......... = 700 90 · .......... = 900 20 · .......... = 400 20 · .......... = 800 |
40 · .......... = 1 200 50 · .......... = 1 500 30 · .......... = 2 700 60 · .......... = 3 600 50 · .......... = 4 000 |