Want to get a head start on those other teams? Go to the link at right for the mnjhml (short for Minnesota Jr. High Math League) and try some of the sample problems. Some of these may appear on Monday's practice test.
Definitions:
Factor - any number which divides evenly into our number. The factors of 12 are 1, 2, 3, 4, 6 and 12
LCM - lowest common multiple The LCM of 12 and 18 is 36
GCF - greatest common factor The GCF of 24 and 32 is 8
Prime - divisible only by itself and 1 The primes between 40 and 50 are 41, 43, and 47
Factorial - 4! (say "four factorial") means 1 x 2 x 3 x 4 = 24
Negative numbers are numbers below zero. Adding a negative is the same as subtracting a positive.
Subtracting a negative is the same as adding a positive. Example: 5 - (-3) = 8
Other topics covered:
Adding and multiplying and dividing fractions.
Working with decimals and rounding.
Ratios
Translating English sentences into algebraic statements
Perimeter and Area
The coordinate plane
Averages (mean, median, and mode)
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