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7th grade challenge Flashcards | StudBud
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7th grade challenge
7th grade challenge
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the greatest test of your math knowledge you never did before
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25 cards
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Questions
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1
What about this one? Find the 3 ordered pairs that are proportional to "2:5".
(3, 10) (4, 11) and (5, 12)
(3, 7.5) (4, 10) and (5, 12.5)
(1,5) (2, 10) and (3, 15)
(1, 2.5) (4, 10) and (5, 2)
2
Which are the MOST important parts of learning math?
to listen carefully, ask good questions and have a desire to learn things
to be smart and have a good calculator
to try hard and always work in a group
to copy notes correctly and memorize formulas
3
Which three are all the same anyway? You will get fooled on this one if you're careless.
8/3, 2 and 1/3, 2.3
6.2, 31/5, 6 and 1/5
3.5, 3 and 1/2, 7/3
2.75, 2 and 2/3, 10/3
4
What about the percent decrease for a dog who goes from 20 lbs. to 15 lbs. ?
20% decrease since 20 - 15 = 5 and 5/20 = 0.20
33% decrease since 20 - 15 = 5 and 5/15 = 0.33
25% decrease since 20 - 15 = 5 and 5/20 = 0.25
25% increase since 20 - 15 = 5 and 5/20 = 0.25
5
How do you know if the numbers in a data table (the 2 column chart thingy) are proportional?
if they always go up by the same amount then yes
If they show a constant rate and include the origin then yes
if their cross products always make zero then yes
if they include (0,0) then yes
6
How could you find out what 35% of 200 is?
multiply 200 x 0.35 and that's your answer
multiply 200 x 3.5 and that's your answer
multiply 200 x 0.35 and subtract it from 200
multiply .200 x 35 and that's your answer
7
What if a shirt that used to cost $12 now costs $15?
The price decreased by 25%
The price increased by 3%
The price increased by 25%
The price increased by 20%
8
Which should be proportional if things are to work properly?
your left leg and left toe
your left leg and right ear
your left leg and right hand
your left leg and right leg
9
Which two ratios are not proportional?
2/5 and 5/12.5
4/5 and 8/10
2/3 and 3/2
2/6 and 1/3
10
How will Dino write a final answer of 10.375 in simplest form as a mixed number value?
"10 3/8" since 3/8 = 375/1000
"10 3/8" since 3/8 = 375/100
"10 3/8" since 3/8 = 375/10
"10 1/4" since 1/4 = 375/1000
11
How much of an increase was made on a car that cost $5500 and now costs $5000?
about 9% since 5000 - 5500 = 500 and 500/5500 = 0.09...
about 9% since 5500 - 5000 = 500 and 500/5500 = 0.09...
no increase at all, actually...that's a decrease
about 90% since 5500 - 5000 = 500 and 500/5500 = 0.09...
12
Simplify: 4(3y - 6)
12y + 24
24- 12y
12y - 24
24 + 12y
13
Which is true?
this week in math we had homework in Khan, IXL and assistment
this week in math we had homework in Turbotax, IXL and assistment
this week in math we had homework in Khan, Prodigy and assistment
this week in math we had homework in Khan, IXL and aaamath.com
14
Which set of ordered pairs show a proportional relationship?
(0, 0) (1, 4) (2, 8) (3, 12)
(0, 0) (1, 4) (2, 5) (3, 6)
(0, 0) (1, 4) (2, 6) (3, 8)
(0, 1) (1, 4) (2, 8) (3, 12)
15
Which 2 have nearly identical values?
7/8 and 78%
3/8 and 38%
1/9 and 19%
2/7 and 27%
16
So why exactly are 5.25 and 5 1/4 equal?
because the whole numbers are the same and 1/5 = 25/100
because the whole numbers are the same and 1/4 = 25/10
they aren't
because the whole numbers are the same and 1/4 = 25/100
17
A basketball went on sale for 20% off the normal price of $40. Which is true below then?
The new sale price is $32 since 40(0.2) = 32
The new sale price is $48 since it's $8 more of an increase
The new sale price is $20 since 20% = $20
The new sale price is $32 since 40(0.2)=8 and 40 - 8 = 32
18
What about an easy one like how to write 41/5 in three other forms?
8 1/5, 8.25 and 825%
5 1/8, 8.2 and 820%
8 1/5, 8.2 and 820%
8 1/2, 8.2 and 850%
19
How would you simplify the ratio 12:48 so it was correct?
divide each number by the GCF of 6 and get 2:8
divide each number by the GCF of 8 and get 1:4
divide each number by the GCF of 12 and get 1:4
divide each number by the GCF of 12 and get 1:6
20
Which expression is the same as "4 pizzas @ $12 each and 6 sodas @ $0.75 apiece?
4(6) + 12(0.75)
4(0.75) + 6(12)
6(0.75) + 4(12)
6(0.75) x 4(12)
21
A proportional data line goes through (2,3), so what else is true?
it must go through (9,6) also
it must go through (9,9) also
it must go through (6,6) also
it must go through (6,9) also
22
Unit rate if 3 candies sell for $2?
about 50 cent
about $1.50
about 75 cent
about 67 cent
23
What's the same as finding the product of 3.5 and 5 and 3/4?
3 and 3/4 x 5.5
3.05 x 5.75
5.5 x 3 and 1/2
5.75 x 3 and 1/2
24
What adjective best describes math class?
amazing
awesome
unbelievable
required
25
What has 7th grade math been about (pretty much) so far this year?
MAP test prep, geometry, statistics
expressions and equations, using proportions, solving problems
geometry, times tables, bar graphs
algebra, calculus, mental math mania
