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Fun Activity 21 st
Century #Computational Thinking
Skills
1. You have to reach the 'Finish' circle from the 'Start' circle by solving subtraction
sums and following answer paths.
4754 3447 8304 7420
Start! –2428 2216 –2383 1164 –1746 6458 –1035
A b C d
2316 2326 1064 1144 3149 6558 6385
6302 5031 4836 6210
–5054 1348 –3987 1064 –1687 3249 –2892
E F g H
6868 3218
1248 1164 1044 3118 3318
9633 8458 7014 9289
–2765 6968 –7294 1264 –3896 4218 –2899
I J K l
Finish!
Which path did you follow? A → .... → L
2. Take away one matchstick to make the statement correct.
3. Put the numbers in the appropriate places to balance the grid.
20 – =
8 11 14 22 + + +
23 25 45 12 – =
= = =
– =
69
Subtraction
