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From 1 to 9 and add 100

From 1 to 9 and add 100

Using the numbers from 1 to 9, without changing their order or putting them together and using the basic arithmetic operations: addition, subtraction, multiplication and division,

Are you able to get 100 as a result?

For example in this attempt: 1 - 2 + 3 + 4 + (5 × 6) + (7 × 8) + 9, we get as a result 101

Solution

There are many solutions. Here are some:

  • (1 × (2 + (3 × 4)) × 5) + 6 + 7 + 8 + 9 = 100
  • 1 + 2 + 3 + 4 + 5 + 6 + 7 + (8 × 9) = 100
  • (1 × 2 × 3 × 4) + 5 + 6 + (7 × 8) + 9 = 100
  • (1 × 2 × 3) + 4 + 5 × (-6 + 7 + 8 + 9) = 100
  • 1 × (2 + 3) × 4 × 5 - 6 + 7 + 8 - 9 = 100