The student will compare and order real numbers.
Numbers can be represented as integers, fractions (proper or improper), mixed numbers, decimals, percents, scientific notation, or square roots.
The easiest way to compare numbers is by converting them to decimal form using the calculator:
Integers: decimal is always at the end.
Fractions (proper & improper): divide numerator by denominator; make the numerator negative (if needed).
Mixed Number: whole number + fraction; make it negative at the end (if needed).
Decimals: line up the decimals to compare the place values using grid paper; making each decimal have the same number of digits make them easier to compare.
Percents: Divide the percent by 100 or use the calculator's percent function.
Scientific Notation: multiply the coefficient by the 10 with its exponent.
Square Roots: put the square root in the calculator; make it negative (if needed).
Compare and order up to 5 numbers expressed as integers, fractions (proper or improper), decimals, mixed numbers, percents, numbers written in scientific notation, radicals (square roots), and π.
Put (improper) fractions in the calculator to find the decimal value.
Example: 3/4 = 0.75
Mixed numbers, enter the whole number and then the fraction. If the number is negative, make it negative at the end (after you combine them).
Example: 5 3/4 --> 5 + 3 / 4 = 5.75
Caution: if a mixed number is negative, calculate the value and make it negative at the end.
Scientific notation can be put into the calculator as it appears. If there are too many zeros, then the number will not display properly.
3.861 * 10^5 = 386,100
Percents can be converted to decimals using the percent function and 1.
Example: 65% of 1 = 0.65
You can make the hand-held display a certain number of decimals all the time. This is very useful for comparing & ordering the decimal values of multiple numbers.
Sharp EL-501W Key Sequence
[2nd] [F<-->E] [number]
The [number] is how many decimal places you want displayed.
To reset this function, use [2nd] [F<-->E] [.]
TI-30Xa Key Sequence
[2nd] [.] [number]
The [number] is how many decimal places you want displayed.
To reset this function, use [2nd] [.] [.]
6.E.2
6.F.4
6.I.7, 14-15
6.M.6-7
6.P.2-3
6.S.3
7.A.10
7.B.5
7.D.2
7.F.6,9
7.H.6-7
7.L.3
8.B.4
8.D.7-8
8.G.1-2
8.J.1-2
A.A.1
A.W.2
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