Make the Number
Try to make the target number using the other numbers. Can use add, subtract, multiply, divide and parentheses. Examples below.
../numbers/images/calc-make.js
Random
Numbers are chosen randomly. There is usually an exact solution but not always. The computer's only advantage is it can test thousands of possibilities.
Examples:
Target: 901 given: 6,3,1,2,25,75
Solution: (25+75)×(6+3)+1
Target: 743 given: 7,2,3,5,25,50
Solution: 50×5×3−7
Target: 127 given: 4,1,5,2,100,50
Solution: (50×5+4)÷2
You may like to learn more about Order of Operations
Options
Try the options! You can change the nature of the game by using different source lists.
Scoring
- 1 point for difference of 2
- 2 points for difference of 1
- 5 points for perfect