In each exercise below, you are given some numbers. Insert operations symbols (+, -, x, ÷ and parentheses) so that a true mathematical sentence is formed.
1. You cannot change the order of the numbers and you must observe the order of operations.
a. 5 4 3 2 1 = 3 b. 5 4 3 2 1 = 0 c. 5 4 3 2 1 = 1 d. 5 4 3 2 1 = 50
2. You cannot change the order of the numbers , but you may put two numbers together to form a two-digit number. You must observe the order of operations.
a. 1 2 3 4 5 6 7 8 = 90 b. 8 7 6 5 4 3 2 1 = 25
3. Make these four totals using these four digits: 4 3 2 1
You can change the order of the numbers and you may put numbers together to
form a two- or three-digit number. You must observe the order of operations.
a. 1312 b. 2 c. 16 d. 1
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