Chap 5 - Fractions and standard form

Question 1

how to +/- fractions

Answer 1

make denominator same

Question 2

how to x fractions

Answer 2

-change to improper fraction
-times top with top/ bottom with bottom
-cross multiply

Question 3

how to / fractions

Answer 3

-change to improper fraction
-flips second fraction top and bottom to bottom and top
-change / to x

Question 4

what are Egyptian fractions

Answer 4

-fractions numerator of 1 that add up to desired no.

Question 5

formula to find percentage of a no.

Answer 5

a/100 x b

Question 6

formula to find no. from %

Answer 6

% x no.

Question 7

standard form rules

Answer 7

-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

Question 8

how to estimate

Answer 8

round no. to whole no. before solving

Question 9

fractions should not have decimal