Bellwork: Week 1, Day 1

1
Bellwork Week 1, Day 1
1) 20 is what percent of 80?
2) Solve for x. -3 2x 13
3) 54 - 92
4) Joseph beat Aaron in 4 out of 7 video games
they played. What percentage of games did Joseph
win?
5) (-5)(27)
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Answer Key
1) 20 is what percent of 80? 25
2) Solve for x. x 5 -3 2x 13
3) 54 - 92 -38
4) Joseph beat Aaron in 4 out of 7 video games
they played. What percentage of games did Joseph
win? 57
5) (-5)(27) -135
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8th Grade Math
Identifying, Comparing, and Ordering Rational and
Irrational Numbers
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Warm-Up Activity
Today we will warm up by working with equivalent
fractions.
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A recipe calls for cups of flour cups of
bananas cups of sugar
We are going to double and half the recipe.
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Ingredients Double recipe Half of recipe
cups of flour cups cups
cups of bananas cups cups
cups of sugar cups cups
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Whole-Class Skills Lesson
Today, you are going to identify numbers as
rational or irrational numbers and order them
from least to greatest.
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rational numbers
A number that can be expressed as a ratio of two
integers, in other words, a fraction.
irrational numbers
A number that cannot be expressed as a ratio of
two integers.
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Venn Diagram
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Give examples of rational numbers.
.25
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Give examples of irrational numbers.
p
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repeating decimals
terminating decimals
0.8
Repeating and terminating decimals are rational
numbers.
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Number Decimal Rational Irrational
43 8 5.375 X
p
375
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Do you think pi is rational or irrational?
Number Decimal Rational Irrational
p
Why do you think so?
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Pi is irrational.
Number Decimal Rational Irrational
p X
If you try to write it as a decimal, you
will never find an end, and it will never repeat.
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Do you think this number is rational or
irrational?
Number Decimal Rational Irrational
37 5
Why do you think so?
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Number Decimal Rational Irrational
37 5 7.4 X
The quotient of the number is a terminating
decimal.
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Create a Poster

• Must explain integers, irrational, rational,
  whole and numbers.
• Ideas
• Write a song, rap or poem
• Create a work of art
• Make an informative poster with definitions
• Write a cartoon or funny story
• Come up with your own idea