Chap 5 - Fractions and standard form Flashcards
1
Q
how to +/- fractions
A
make denominator same
2
Q
how to x fractions
A
-change to improper fraction
-times top with top/ bottom with bottom
-cross multiply
3
Q
how to / fractions
A
-change to improper fraction
-flips second fraction top and bottom to bottom and top
-change / to x
4
Q
what are Egyptian fractions
A
-fractions numerator of 1 that add up to desired no.
5
Q
formula to find no. of a %
A
% x no.
6
Q
formula to find % from no.
A
a/b x 100
7
Q
standard form rules
A
-root no. has to be in ones and in dp
-of 10^x
-change divisions to fraction
-find full no. when +/-
-more power = go right
-less power = go left
8
Q
how to estimate
A
round no. to whole no. before solving
9
Q
fractions should not have decimal
A
