Transcript Test Review Questions Test 1

Test Review Questions
Test 1
What is the relationship between addition and
subtraction?
Addition and Subtraction are inverses or
opposites of one another.
5+3=8
8-3 =5
What is the relationship between multiplication
and division?
Multiplication and division are inverses of one
another
3 X 4 = 12
12
3=4
Test Review
• What is the relationship between addition and
multiplication?
• Multiplication is repeated addition.
• 5 + 5 + 5 = 15
5 x 3 = 15
• What is the relationship between subtraction and
division?
• Division is repeated subtraction.
• 12 – 3 = 9
12 4 = 3
• 9 -3 = 6
• 6 -3 = 3
Test Review
Questions to consider
• Why is understanding the relationship
between math operations (addition,
subtraction, multiplication, and division
important?
• How does understanding the relationship
between math operations help us to solve
problems faster?
Test Review
• All of the numbers in the problems below are the
same but the parentheses are in different places.
Does this effect the answer? If so why? Does it
matter what order we solve problems in?
• 3 X (4 -2) + 12 6
• 3 X 4 (-2 +12)
• 3 X 4 -2 +12
6
6
Standard 5.0A: Analyze patterns and relationships
Label the horizontal axis either X or Y.
Label the vertical axis either or X or Y.
Label the quadrants 1-4
Standard 5.0A: Analyze patterns and relationships
When given coordinates ( , ) does the X or Y
coordinate come first?
Standard 5.0A: Analyze patterns and relationships
Please graph (make a dot) at the following
coordinates and then connect them with a line.
(2 , -4)
(-2 , 4)
(-2,-4)
(2 , 4)
6.RP Understand the concept of a ratio and use ratio language to
describe a ratio relationship between two quantities.
Ratios
What is a ratio?
A ratio is a comparison of one quantity to
another.
For example if I were making lemonade and
needed to have one part lemon to four parts
water the ratio would be 1:4 or ¼.
DON’T CONFUSE FRACTIONS WITH RATIOS
Difference between fractions and
ratios continued
• A 1:4 ratio means that there are 5 parts all
together and one part is oil. It can be represented
by ¼. This is why the context of the problem is
important.
Oil
20%
Gas
20%
Gas
20%
Gas
20%
Gas
20%
¼ as a fraction means that there are 4 parts and
25% of them are oil. If you mixed gas using a
fraction model instead of a ratio would you have to
much or to little oil in your mixture?
Oil
25%
Gas
25%
Gas
25%
Gas
25%
Ratio
• Convert the ratios to fractions
•
•
•
•
•
3:2
1:4
5:7
9:1
4:8
3/5
Label the triangle using the
following fractions as a percentage,
fraction and decimal.
1/2, 1/4/1/8, and 1/16
Percentages
Fractions
Decimals
Percentages, decimals, and fractions
• Label each of the smaller areas as a decimal,
fraction, and percentage of the total.
• Using your diagram from the previous slide
draw and fill in the following table.
Fraction
Whole
Half
Quarter
Eighth
Sixteenth
Percentage
Decimal
Example conversion.
• Convert the following fractions to decimals and
percents.
• 3/5 Divide the denominator into the numerator
to get the decimal.
3/5 = .6 (.6 is six tenths or 60 hundredths
therefore it is 60%).
3/5 = .6 = 60%