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Add Some, Subtract Some

Directions: Use the digits 1-9, at most once, to complete the equation.
What is the greatest result you can make?
What is the least result you can make?

Hint

Hint

What numbers work (or won’t work) for the tens digits?
Could the result have a zero in the one’s place?
Could the least result be less than 10?
Could the greatest result be greater than 100?

Answer

Answer

There are many answers. Here are some:

27 – 8 = 14 + 5

25 – 8 = 13 + 4 (or 14 + 3) ~ least result of 17 = 17

95 – 2 = 87 + 6 (or 86 + 7) ~ greatest result of 93 = 93

Source: Molly Rawding

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