unit test #1 review number system - ms. rogers'...
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Name:___________________________________ Date:____________________________ Pd:____
UNIT TEST #1 STUDY GUIDE: The Number System • Absolute value • Zero Pairs • Additive Inverses • Adding, Subtracting, Multiplying, and Dividing with Negative numbers (including rational numbers)
• Order of operations (including order of operations with rational numbers) • Converting fractions to decimals and Converting decimals to fractions.
Essential Questions: 1) Can you reverse the order of rational numbers when performing any operation and still get the
same answer?
2) How do operations with integers compare to operations with rational numbers? 3) How does the opposite of a number differ from the absolute value of a number?
4) What happens when rational numbers are converted to decimals? 5) How is the order of operations applied to problems dealing with rational numbers?
Absolute Value: 1) −576 2) − 4 3) 54 − −78 4) − 5 − 9 + 12 5) −25+ −46.5 6) −56+ −56− 67 Zero Pairs: 1) Write the definition of a zero pair. 2) Provide an example of a zero pair. 3) Which of the follow are zero pairs? a. −15 !"# 15 b. 350 !"# −350 c. 1 !"# − 11
d. 250 !"#— 250 e. −17.5 !"# 17.5 f. −89 !"# 189 Additive Inverses: 1) What is the definition of an additive inverse? 2) Find the additive inverses of the following numbers.
a. −375 b. -‐23 c. 23.45 d. !!
e. 67.6 f. !"! g. −52.1907 h. 0.651
Adding, Subtracting, Multiplying, and Dividing with Negative numbers (including rational numbers) 1) WITHOUT SOLVING, Detmerine if the following expressions will be positive or negative. a. −21+ (−10) b. 195.10− 196 c. 72(−12)
d. 87÷−2 e. − !!− − !
! f. −12.7(−1.12)
g. !"!! h. 56.7+ −70 i. −25− −17.25
2) Solve the following. Simplify when necessary!
a. (−12) + 7 b. 3.4 − −12.1 c. (−10) + (−7)
d. − !!− !
! e. (−45) + 9 f.
!"!!− !"
!"
g. (−5.6) − (−12.6) + (−6.6) h. −56÷−7
i. (−1) − (−40) j. (−13.6) + 12 − (−15.5) k. 1 !!− 3 !
!"
l. −25×−4 m. (−1) + (−46) n. 54÷−9 o. 3 ∙−15 p. 9.5 − (−19.3) q. −12.75(−3.5)
r. Maggie owes the candy store $35. Each of 5 friends will help her pay off her debt. How much will each friend pay? s. Roman Civilization began in 509 B.C. and ended in 476 A.D. How long did Roman Civilization last? t. Lilly bought 4 pairs of blue jeans at $32 each. How much money did she pay the clerk? u. In the Sahara Desert one day it was 136°F. In the Gobi Desert a temperature of -‐50°F was recorded. What is the difference between these two temperatures? Order of operations (including order of operations with rational numbers) Use the order of operations to simplify the expression
a.)
!
4 + (24 ÷ 23) • 5 b.)
!
"20 ÷ ("2 "18) c.)
!
(21" 9) " 4 • 3"6.5 " 2.7
d.)
!
"8 + 32 + 4 • "3 e.)
!
"5 + 4 • 2 + (6 " 4) f.)
!
("2)2 + "22 "15
g.)
!
"56
+23 h.)
!
"14"24"34 i.)
!
112
• 2 25" 2
j.) 5÷23•!12+15 k.) (!2.1".13)"5÷15 l.)
!
0.3 1.29)
Converting fractions to decimals and Converting decimals to fractions Covert the following fractions to decimals or decimals to fractions. Be sure to simplify when necessary!
a. !"!"" b. . 76 c.
!! d.
!!
e. . 95 f. !"!" g.
!"!" h.
!"!"