| 1 |
Making 100 |
Given one shaded number, the task is to shade two more numbers so that the total of all
three shaded is 100. |
| 2 |
Similar sums |
Two numbers are shaded. The task is to shade two more numbers which will have the same total
as the sum of those already shaded. |
| 3 |
Common multiples |
Shade all the common multiples of n and m. |
| 4 |
Digit count |
Which digit occurs most in the hundred square? |
| 5 |
Finding primes |
6 column grid. Shade all the prime numbers. What do you notice? Why does this happen? |
| 6 |
What is the difference? |
Two numbers are shaded. The task is to shade the number which is the
difference between these. |
