1) 2x = 10 a) x = 5 b) x = 10 c) x = 3 d) x = 4 2) x + 14 = 25 a) x = 25 b) x = 1 c) x = 20 d) x = 11 3) What is the variable in the equation 34y + 2 = 70 a) = b) 34 c) y d) 70 4) x = 30 - 12 a) x = 30 b) x = 18 c) x = 12 d) x = 2 5) What is a variable in math? a) Something that varies b) A math expression that is balanced c) A tricky question d) An unknown number usually represented by a letter or a symbol 6) What is the variable in the expression r + s = 100 a) r b) s c) r and s d) 100 7) 5x = 30 a) x = 6 b) x = 5 c) x = 30 d) x = 20 8) 10x = 100 a) x = 11 b) x = 100 c) x = 1 d) x = 10 9) 8 + x = 12 a) x = 6 b) x = 7 c) x = 4 d) x = 8 10) x + 19 = 30 a) x = 11 b) x = 1 c) x = 14 d) x = 30 11) x - 30 = 20 a) x = 20 b) x = 50 c) x = 30 d) x = 15 12) 3x = 12 a) x = 12 b) x = 5 c) x = 3 d) x = 4 13) 7x = 49 a) x = 3 b) x = 8 c) x = 7 d) x = 10 14) 12x = 12 a) x = 5 b) x = 12 c) x = 0 d) x = 1 15) What is the variable in the expression 1 + 1 = 2 a) 1 b) 2 c) = d) There is no variable 16) 4x = 36 a) x = 9 b) x = 4 c) x = 36 d) x = 7 17) x + x = 0 a) x = 1 b) x = 0 c) x = 5 d) x = 100 18) 13 - x = 8 a) x = 3 b) x = 9 c) x = 5 d) x = 7 19) 8x = 40 a) x = 5 b) x = 7 c) x = 6 d) x = 9 20) 10x = 80 a) x = 7 b) x = 8 c) x = 9 d) x = 10

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