Transcript Let`s Practice our standards from Benchmark 2

Let’s Practice our
standards from
Benchmark 2
Objective: I can use various strategies in math to
problem solve.
math
objectives
• G5.2M.C2.PO2: Probability
• G5.1M.C1.P12: Convert fractions,
percents, and decimals
• G5.1M.C2.PO1B: add and subtract
fractions with unlike denominators.
• G5.1M.C2.PO1A: add and subtract
decimals
• G5.1M.C3.PO1: estimating
• G5.3M.C1.PO1A: Numerical sequence
•
What is probability? How do I express
outcomes?
Essential Questions
• What strategies do I use to convert
equivalent fractions, decimals, and
percents?
• How do I use clues to create a valid
estimate?
• How do I add/subtract fractions with
unlike denominators?
• How do I identify a rule of a numerical
sequence?
Set- Think...
• Think back to this quarter... what math
standard did you understand the most? What
strategies did you use when solving
problems?
• Share with a face partner.
Adding/subtracting
fractions
• Solve. Make sure your answer is in
lowest terms.
• 2/3 - 5/9
A. 33/27
B. 3/27
C. 1/9
Your Turn...
• Solve. Make sure your answer is in lowest
terms.
•6
2/9 - 2 3/9
A. 4 8/9
B. 3 8/9
C. 3 6/9
Your Turn...
• Solve. Make sure your answer is in lowest
terms.
•
6 5/8 + 1 1/4
A. 7 7/8
B. 7 3/4
C. 5 1/2
Solve equivalent fractions,
%, percents
• 2) Which of the following is true?
A. 4/5 = 45%
B. 1/4 = 25%
C. 1/8 = 0.18
D. 3/8 = 38/100
• 3) Which of the following is not true?
A. 0.06 = 60%
B. 0.7 = 70%
C. 1/5 = 20%
D. 25% = 100/400
Compare fractions,
decimals, percents
• Which is correctly ordered from least to
greatest:
a. 1 3/4, 1.6, 150%, 9/10
b. 1 3/4, 150%, 9/10, 1.6
c. 9/10, 150%, 1.6, 1 3/4
Let’s try!
• Which is correctly ordered from greatest
to least:
a. 1 1/2, 270%, 3.625, 2 1/6
b. 3.62, 270%, 2 1/6, 1 1/2
c. 270%, 2 1/6, 3.62, 1 1/2
Let’s try!
• Which is correctly ordered from least to
greatest:
a. 1.25, 1/2, 40%, 1/6
b. 1/6, 40%, 1/2, 1.25
c. 1/2, 40%, 1.25, 1/6
Add/Subtract
decimals
• 2) Solve
• a) 67.83
• b) 67.357
• c) 6.783
• d) 6.7357
67.4 - 0.043
Solve
• 3) Solve
• a) 56.78
• b) 1.34
• c) 5.678
• d) 55.22
56 + 0.78
Solve
• 9) Marla bought a book for $22.50. The
tax on the book was $1.13. She gave
the cashier $25. How much will Marla
get back in change?
• a) $48.63
• b) $2.75
• c) $1.37
• d) $0.63
Estimate
•
Jan went shopping for wood for her
new shed. She needed 12 2/9 feet of
two-by-fours, 13 6/8 of four-by-fours,
and 15 3/5 of trim. About how much
wood did Jan need.
•A. 42
•B. 43
•C. 41
•D. 44
Estimate
• Joe went to the store with his allowance
money. He bought a soda for .34, a
candy bar for 1.74, and a pack of gum
for 2.01. About how much did Joe
spend at the store?
•A. 2.80
•B. 3.00
•C. 2.90
•D. 4.00
Estimate
• Round 7
•A. 8
•B. 6
•C. 7
•D. 5
5/10 to the nearest whole
Probability
• 2) A box contains 9 red marbles, 12
blue marbles, 13 green marbles, and 6
white marbles. What is the probability of
taking out a red marble?
• a) 9 out of 30
• b) 12 out of 41
• c) 13/40
• d) 9/40
Solve
• 5) How likely would it be to land on a
“B”?
• a) Very likely
• b) Unlikely
• c) Certain
• d) Impossible
A B
B
A
B B
Probability
13
23
30
18
22
•Which is MOST likely to happen
•a) to pick a multiple of 5
•b) to choose an even number
•c) to choose a number in the 30’s
•d) to choose a letter.
25
Numerical sequence
• 3) Which two numbers would complete
the following sequence?
•
•
•
•
•
•
•
6, 5 1/4, 4 1/2, 3 3/4, ___ ,___
A) 3 1/2, 3 1/4
B) 3, 2 1/2
C) 3, 2 1/4
D) 3 1/4, 2 1/2
Solve
• 4) What are the missing numbers
•
•
•
•
•
in the following sequence?
67, _____, 57, 52, 47, _____, 25
A. 65, 42
B. 62, 45
C. 62, 42
D. 65, 42
Closure
• What strategies will you remember to
use when you are problem solving?
• Share with your face partner