Transcript Review Unit 1 Questionsx

Unit 1
Study Guide
Find the Product
. 𝟔 × . 𝟐𝟑 =
𝟏 𝟑
𝟑 ÷ =
𝟒 𝟓
Find the GCF
of
24 and 48
𝟓
𝟑
𝟓 −𝟐 =
𝟕
𝟓
What is the first step when
you add or subtract decimals?
𝟕 𝟒
× =
𝟖 𝟔
Find the LCM
of
8 and 22
59.28 ÷ 3.8 =
14 −
𝟔
𝟔
𝟖
=
Change to an
Improper Fraction
𝟕
𝟏𝟏
𝟖
15.07 + .98 + 9.23 + 102.034 =
𝟓
𝟕
𝟐𝟐
+ 𝟑𝟒
=
𝟏𝟐
𝟏𝟖
Find the GCF and LCM
Of
18, 24, and 8
What do you call this
type of decimal?
.312312
A new book at the store costs
$53.07. You have a $22.78 credit
at the store. How much money
do you need to bring to the
store to buy the book?
Adding Fractions
1. Set up Vertically
2. Find Least Common Denominator
3. Add
4. Simplify
Subtracting Fractions
1. Set up Vertically
2. Find Least Common Denominator
3. Borrow if needed
4. Subtract
5. Simplify
Multiplying Fractions/Mixed Numbers
1. Set up in fraction form
2. Multiple numerator by numerator
3. Multiply denominator by denominator
4. Simplify
Dividing Fraction/Mixed Numbers
1. Set up on fraction form
2. Keep first fraction the same
3. Change division to multiplication
4. Multiply by the reciprocal
5. Simplify
Tom rode his bike 2/5 of a mile and
walked another 1/4 of a mile.
How far did he travel?
Your grandma's chocolate
chip cookie recipe requires
3/4 of a cup of flour. If you're
making a double recipe, how
much flour should be used?
Little John had $8.50. He spent
$1.25 on sweets and gave to his
two friends $1.20 each. How
much money was left?
A piece of cloth measuring 48
m in length is cut to 3/4 of its
length. How many meters in
length are there in the piece
that has been removed?
Hot dogs a sold in packages of 8 and
hot dog buns are sold in packages of
12. If you want to have the same
number of hot dogs and hotdog
bums, how many packs of each do
you have to buy?
Adding and Subtracting Decimals
1. Line up decimals
2. Add zeros if wanted
3. Add or Subtract
Multiplying Decimals
1. Set up with problem with the number that
has the most digits on top
2. Multiply
3. Count the total number of decimal places in
the numbers being multiplied
4. Place the decimal using the previous
number counted (Count the places from
right to left)
Multiplying Decimals Example
1.
2.234
x 7
2.
2.234
x 7
15638
3.
2.234 ----> 3 places
x
7 ----> 0 places
15638
4.
2.234
x 7
1 5.6 3 8 <---- place decimal 3 places counting from
right to left
Dividing Decimals
For problems with decimal in dividend only (dividend ÷ divisor =
quotient or number inside the box)
1. Move decimal up
2. Divide
For problems with decimal in divisor (dividend ÷ divisor = quotient or
number outside the box)
1.
2.
3.
4.
Move decimal in divisor (number outside the box)
Move decimal in dividend (number inside the box)
Move decimal up
Divide
Dividing Decimal Example
2.244 ÷ .32
1.
.3212.244
Move decimal outside 2 places

2.
3212.244
Move decimal inside 2 places

.
3.
321224.4
4. Divide

Move decimal up