mentally Math 367 Math Teaching Methods Day 1 Day 2 JROlsen WIU Day 3 Day 4 Day 5 Day 6 Day 7 Day 8 Day 9 Day 10 Day 11 Day 12 Day 13 Day 14 Day 15 Day 16 Day 17 Focusing on Fractions Decimals and Percents ID: 549322
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Slide1
Just Do It (mentally)
Math 367 – Math Teaching Methods
Day 1
Day 2
J.R.Olsen ~ W.I.U.
Day 3
Day 4
Day 5
Day 6
Day 7
Day 8
Day 9
Day 10
Day 11
Day 12
Day 13
Day 14
Day 15
Day 16
Day 17
Focusing on Fractions, Decimals, and PercentsSlide2
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J.R.Olsen ~ W.I.U.Slide3
Day 1 Questions
Record your answers to the following in the Mental Math Section of your notebook.
10% of 650 is ___50% of 860 is ___
The regular price of a pair of jeans is $46. If they are on sale for 50% off, what is the sale price?
If one third of the sixth grade class of 120 students exceeded state standards, how many sixth graders exceeded state standards?Solve:
10x = 43Bonus: 70% of 80 = ___
J.R.Olsen ~ W.I.U.
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Day 1 Answers
Check your answers.
65430
$23740 sixth graders4.3Bonus: 56
J.R.Olsen ~ W.I.U.
Website of the Day: Make a Match
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Day 2 Questions
Record your answers to the following in the Mental Math Section of your notebook.
One-eighth of 320 is ___12.5% of 40 is ___
If 37.5% of the teachers union, which has 160 members, is against the proposal, how many are against the proposal?
What is the 10% tourism tax on a $65.00 ticket?Bonus: 30% of 800 = ___
J.R.Olsen ~ W.I.U.
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Day 2 Answers
Check your answers.
405
24 3060 teachers tax is $6.50
Bonus: 240
J.R.Olsen ~ W.I.U.
Web site of the Day: Meteor Multiplication
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Day 3 Questions
Record your answers in your notebook.
If you get 25% more free and normally there are 20 ounces, how many ounces do you get? 820
.25 Change to a fraction: 60%
If five-eighths of the cookie dough is used, how much is left? If is the probability of winning, what is the probability of losing?
Bonus: 75% of 820 is ___J.R.Olsen ~ W.I.U.
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Day 3 Answers
Check your answers.
20 + 5 = 25 oz. 205
Three-eighths
Six-seventeenths Bonus: 615
J.R.Olsen ~ W.I.U.
Web site of the Day: Fresh Baked Fractions
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Day 4 Questions
Record your answers in your notebook.
If 30% of the school walks to school, what fraction is this?Find 12% of 600.
If 23% of the 2,000 students in the district qualify for free or reduced lunch, how many students qualify for free or reduced lunch? If 21/25 of the construction paper is used up, what fraction remains?
Find 12.5% of 56.Bonus: .03
130 = ___J.R.Olsen ~ W.I.U.
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Day 4 Answers
Check your answers.
72
460 students
7Bonus: 3.9
J.R.Olsen ~ W.I.U.
Web site of the Day: Jigsaw Puzzle
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Day 5 Questions
Record your answers in your notebook.
What is the 5% tax on a $9 item? Find the 15% tip on a bill of $16.00. If 87.5% of the students are present and enrollment is 800, how many students are present?
Bonus: 110% of 800 is ___
J.R.Olsen ~ W.I.U.
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Day 5 Answers
Check your answers.
9 36
$0.45 $2.40 45
700 students presentBonus: 880.
J.R.Olsen ~ W.I.U.Web site of the Day: Find
Grampy-Strict
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Day 6 Questions
Record your answers to the following in the Mental Math Section of your notebook.
10% of 5.63 = ___ Find the 20% tip on a bill of $32.00.
25% of $40 = ___ 125% of $40 = ___ If the PTO is selling pizzas, which cost them $6, and they want to make a 25% profit, how much should they charge for a pizza?
Change to a mixed number: 150%Bonus: Change to a mixed number: 280%
J.R.Olsen ~ W.I.U.
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Day 6 Answers
Check your answers.
.563 $6.40
$10 $50 $6 + $1.50 = $7.50
Bonus:
J.R.Olsen ~ W.I.U.
Web site of the Day: Place Value Pirates
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Day 7 Questions
If you start with 5¾ cups of sugar and use 2½ cups, how many are left over?
If you start with 14.7 liters and pour out 3.3 liters, how much is left? If you start with 200 kg and 15% is removed, how much is left?If you need to register 240 students and ¼ have already be registered, how many still need to be registered?
8,000,000 .125 33⅓ % of 6,000 is ___
Bonus: 7/8 96 = 96 8 7 = 12 7 = 84
J.R.Olsen ~ W.I.U.
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Record your answers in your notebook.Slide16
Day 7 Answers
Check your answers.
3¼ 11.4 liters
170 kg 180 students 1,000,000
2,000Bonus: Find the tip on an $82 bill.
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Web site of the Day: Star GazingSlide17
Day 8 Questions
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1% of 45.7 is ___
0.01
5,000 = ___ 3% of 5,000 = ___
If 1% of the population of 3,000,000 got the H1N1 flu, how many got the flu? 110% of 50 = ___ If the sales tax is 5% and the cost of the shirt is $30, how much do you have to pay?
Bonus: $8.20 + $4.10 = $12.30
Record your answers in your notebook.Slide18
Day 8 Answers
Check your answers.
4.57 50
150 30,000 5.5
$31.50Bonus: Find the tip on an $82 bill.
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Web site of the Day: Crack the CodeSlide19
Day 9 Questions
J.R.Olsen ~ W.I.U.
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If 20% of the students were below standards on the pretest, and there are 450 students, how many were below standards?
Find 8% of 7,000.
If the item costs the store $50 and there is a 40% markup, what will the retail price be?
$20.40 – $1.90 = ___ (Hint: use equal additions) If you start with 19.3 mL and use 5.8 mL, how much is left?
Bonus: Change to a percent:
Record your answers in your notebook.Slide20
Day 9 Answers
Check your answers.
90 students 560.
$70 $20.40 – $1.90 = 20.50 – 2.00 = $18.50
19.3 – 5.8 = 19.5 – 6 = 13.5 mLBonus: 65%
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Web site of the Day:
Fishy Fractions – Equivalent FractionsSlide21
Day 10 Questions
Change to a percent:
If three-twentieths of the school attended the game, what percent attended the game? Change to a fraction: 85% If 35% of the solution is acid, what fraction is acid?
Change to a fraction: 66⅔ % 66⅔ % of 12 = ___
Bonus: 75% of 52 = ___J.R.Olsen ~ W.I.U.
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Record your answers in your notebook.Slide22
Day 10 Answers
Check your answers.
5% 15%
8Bonus: 39
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Web site of the Day: Fishy Fractions - AddingSlide23
Day 11 Questions
If of the frogs have red spots and there are 420 frogs, how many have red spots? Solve: Solve:
Solve: 27% of 200 kg = ___Bonus: 137.5% of 800 is __
J.R.Olsen ~ W.I.U.
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Record your answers in your notebook.Slide24
Day 11 Answers
Check your answers.
70 3 = 210
60 4 = 240
54 kg
Bonus: J.R.Olsen ~ W.I.U.
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Web site of the Day: Fishy Fractions -
MoreSlide25
Day 12 Questions
Find the shooting percentage of each
player
J.R.Olsen ~ W.I.U.
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Record your answers in your notebook.Slide26
Day 12 Answers
Check your answers.
J.R.Olsen ~ W.I.U.
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Web site of the Day: Mission MagnetiteSlide27
Day 13 Questions
J.R.Olsen ~ W.I.U.
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Record your answers in your notebook.
Estimate
the
shooting percentage of each
playerSlide28
Day 13 Answers
Check your answers.
J.R.Olsen ~ W.I.U.
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Web site of the Day: Bucky's BlueprintsSlide29
Day 14 Questions
1 – .27
If the poll shows 46% in favor, what percent is against? If the probability of getting an ‘A’ is 29%, what is the probability of not getting an ‘A’?
If 25.5% are incorrect, what percent are correct?
If 19.4% of the customers used a coupon, what percent did not use a coupon? If 37% of the shots were missed, what percent of the shot scored?
Bonus: If 0.22% of the solution is a contaminant, what percent is pure?
J.R.Olsen ~ W.I.U.
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Record your answers in your notebook.Slide30
Day 14 Answers
Check your answers.
.73 54%
71% 74.5%
80.6%
63%Bonus: 99.78% pure
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Web site of the Day: Sleuths on the LooseSlide31
Day 15 Questions
If the 24 oz. bottle of hand lotion is on special and you receive
33⅓% free, how many ounces should you receive? The club has $670 to spend this year. They budget 10% for supplies. How much is budgeted for supplies?
Three-fifths of the delegates favored the motion. If there are 55 delegates, how many favored the motion? If the length is 1.2 cm and width is 3 cm, what is the area?
75% of 96 = ___
Change to a percent: Bonus: If 25% have inadequate health care and there are 2.4 million people, how many have inadequate health care?
J.R.Olsen ~ W.I.U.
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Record your answers in your notebook.Slide32
Day 15 Answers
Check your answers.
24 + 8 = 32 oz. $67
33 delegates 3.6 cm²
72
60% Bonus: .6 million = 600,000 people
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Web site of the Day: Death to Decimals Slide33
Day 16 Questions
A piece of paper starts with a length of 11 inches. Five-eighths of an inch are cut off. What is the new length?
12% of 9,000 € = ___
If the length and width are 20 feet and 2.4 feet, what is the area? If the length and width are 20 feet and 2.4 feet, what is the perimeter?
What is the 15% service charge on a purchase of $42.00?
If there were 300 members last year and this year there is a 20% increase, how many members are there this year?Bonus: If Julie is 52 for 80, what is the shooting percentage?
J.R.Olsen ~ W.I.U.
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Record your answers in your notebook.Slide34
Day 16 Answers
Check your answers.
10 and three-eighths inch.
1,080 € 48 sq. ft.
44.8 ft. $6.30
360 membersBonus: 52/80 = 13/20 = 65%
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Web site of the Day: Fraction Pairs GameSlide35
Day 17 Questions
A piece of paper starts with a
width of 8½ inches. One and seven-eighths of an inch are cut off. What is the new width? Jordan start with $13.20. He pays $4.90 for lunch. How much does he have left?
If Geoff has 6 hits in 24 at-bats, what is his batting average (convert to a 3-place decimal)?
120% of 70 = ___ 0.1% of 80 = ___
37.5% of 4,000 € = ___
Bonus: If 1 in 7 residents receive a property tax bill and there are 109,200 residents, how many tax bills are there?
J.R.Olsen ~ W.I.U.
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Record your answers in your notebook.Slide36
Day 17 Answers
Check your answers.
$8.30
.250 84
0.8
(3/8)4000 = 3500 = 1,500 €Bonus: 15,600 tax bills
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Web site of the Day:
Fraction (and percent) Four
Web site of the Day:Balloon Invaders II