Accuplacer math placement
test
How to divide fractions -->Multiply by the recipricol of the second fraction (ex. 3/4
➗ 5/7 is rewritten as 3/4 x 7/5)
How to add or subtract decimals -->1. line up the decimals 2. fill in spaces with zeros
3. bring decimal STRAIGHT DOWN 4. Add using correct place value
How to divide decimals -->• If number you're dividing by is a decimal, then divide as
usual and bring decimal point in the number being divided straight up.
• If number you're dividing by IS a decimal, then make it not a decimal by pushing
decimal to the right as much as needed. Push decimal exact same amount to the
right in the other number.
How to change a decimal to a fraction -->Starting from the decimal point, count the
decimal places (to the right). If there is one decimal place, put the number over 10
and simplify. If there are two places, put the number over 100 and simplify. If there
are three places, put it over 1000 and simplify. Four places, put it over 10,000 and
simplify.
How to change a fraction to a decimal -->Ex: 7/25=
y y y y y y y y y y
7 x 4 25
y y y
-- ----
y
25 x 4 = 100
y y y y y
So 7/25=.25
y
11/20=
11 x 5 55
y y y
-- ---
y
20 x 5 = 100
y y y y
test
How to divide fractions -->Multiply by the recipricol of the second fraction (ex. 3/4
➗ 5/7 is rewritten as 3/4 x 7/5)
How to add or subtract decimals -->1. line up the decimals 2. fill in spaces with zeros
3. bring decimal STRAIGHT DOWN 4. Add using correct place value
How to divide decimals -->• If number you're dividing by is a decimal, then divide as
usual and bring decimal point in the number being divided straight up.
• If number you're dividing by IS a decimal, then make it not a decimal by pushing
decimal to the right as much as needed. Push decimal exact same amount to the
right in the other number.
How to change a decimal to a fraction -->Starting from the decimal point, count the
decimal places (to the right). If there is one decimal place, put the number over 10
and simplify. If there are two places, put the number over 100 and simplify. If there
are three places, put it over 1000 and simplify. Four places, put it over 10,000 and
simplify.
How to change a fraction to a decimal -->Ex: 7/25=
y y y y y y y y y y
7 x 4 25
y y y
-- ----
y
25 x 4 = 100
y y y y y
So 7/25=.25
y
11/20=
11 x 5 55
y y y
-- ---
y
20 x 5 = 100
y y y y
