Je oefent getallen tot een miljoen opbouwen en aanvullen.
4000 + ... = 4300
300
70000 + ... = 73000
3000
500000 + ... = 540000
40000
2345 = 2000 + 300 + 40 + ...
5
6078 = 6000 + ...
78
819000 = 800000 + ...
19000
9999 + 1 = ...
10000
99999 + 1 = ...
100000
999999 + 1 = ...
1000000
50000 - 1 = ...
49999
32000 + 8000 = ...
450000 + 50000 = ...
500000
123000 + ... = 124000
1000
785000 - ... = 780000
5000
620000 + ... = 700000
80000
1000000 - 1 = ...
999999
250000 + 250000 = ...
900000 - 100000 = ...
800000
345678 + ... = 345700
22
701000 - ... = 700000