Name ____________________________________________ Date _____________________ Block _________ Math 7 - Unit 1 Test Study Guide – Integers, Absolute Value, Properties, Order of Operations SOLs 7.1e, 7.3, 7.16 a, b, d Simplify each expression below. Circle your final answer. 1) −15 + 11 2) 32 8 *3) 10 – (−5) + 16 5) −2(20) 6) (−8)(−9) 8) |−15| + |−10| *9) −2 – ( *11) 4) 5 – 14 7) |−24| −18 3 −22+(−8) ) *10) 4 14 *12) 5 4(2) −2 Model the following expressions using counters, then evaluate. 13) −3 + 5 14) 3 · ( −4) Answer: __________ Answer: __________ 15) −5 + (−2) Answer: __________ Kayla starts with $200 in her checking account. She withdraws $100 to pay the dentist and withdraws another $25 to buy school supplies. Her Aunt gave her $30, which she deposited in her checking account. 16) Write an expression that represents the given situation. __________________ 17) How much money does Kayla now have in her checking account? _________________ A submersible is taking samples in ocean. On day 1, they reached the first point at 1400 feet below ground level. On day 2, they reached the second point at 700 feet below ground level. 18) Write an expression using absolute value to show the distance between the two points on day 1 and day 2. Then solve it to find the actual distance between the two points. Expression: Actual distance: _________ Use the number line to demonstrate the expressions. 19) –4 + 7 20) Answer: ______ –2 ● 2 Answer: ______ Use the number line to write integer expression. 21) Expression: ________________ Answer: _______ 22) Circle ALL expressions below that can be represented by the given model. –5 + 13 0 + 5 − 11 5 – (–6) Apply the following properties to 5 – 11 5 + (–11) −5 + (–6) 6 – (–5) 0 – 11 12 + (13 + 8). 23) Commutative of Addition 12 + (13 + 8) = _________________________ 24) Associative of Addition 12 + (13 + 8) = _________________________ Apply the following properties to (4 ● 8) ● 25. 25) Commutative of Multiplication (4 ● 8) ● 25 = _________________________ 26) Associative of Multiplication (4 ● 8) ● 25 = __________________________ Create an example using the number 15 to demonstrate the following properties: 27) Multiplicative of Zero ________________________ 30) Additive Identity ________________________ 31) Additive Inverse ________________________ 32) Multiplicative Identity __________________ 33) Multiplicative Inverse ________________________ Evaluate each expression. 34.) 4(10) – 22 ÷11 35.) (32 – 12) ÷ 22 36.) 9(13 – 16)2 37.) (7 + 3)23 39.) (41 + 9)(3)2 38.) 40.) (20 – 22) + 32 (96 – 21) ÷ 52 41.) 2 – 3 · 7 + 16