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100
A mathematical statement in which two quantities are equal.
What is an Equation
100
R + 7 =28
R = 21
100
5N = 25
N = 5
100
2(X-3) = 6
X = 6
200
Name for the letter representing unknown amounts.
What is a variable or unknown.
200
C + 5 = 21
C = 16
200
7C = 84
C = 12
200
4(A+3) = 16
A = 1
300
A number written in fraction notation.
What is a ratio.
300
A - 16 = 3
A = 19
300
3B - 1 = 11
B = 4
300
3(B-1) = 21
B = 8
400
Name for two equal fractions or ratios.
What is a proportion.
400
A - 9 = 15
A = 24
400
3J + J = 28
J = 7
400
6(B+2) = 30
B = 3
500
Name for the product of the numerator of one fraction times the denominator of another fraction.
What is the cross product.
500
121 - A = 2
A = 119
500
3B + 2B - 6 = 9
B = 3
500
2(X-3) = 8
X = 7