1. What is the simplified form of the expression?
7m^2 + 6.5n - 4n + 2.5m^2 - n
9.5m^2 + 1.5n
4.5m^2 + 1.5n
1.5m^2 - 4.2n
9.5m^2 - 1.5n
2. What is the sum?
9/4 + (-1/5)
41/20
-41/20
-1/3
8/20
3. Order the following numbers from least to greatest.
√7, -2.3, √3, 5.1, -1/3
√7, -2.3, -1/3, √3, 5.1
-2.3, -1/3, √3, √7, 5.1
-2.3, -1/3, 5.1, √3, √7
√3, √7, -1/3, -2.3, 5.1
4. What sum or difference is equivalent to the expression?
3x - 2/9
1/3x-2/9
2/9x-1/3
1/9x
2/9
My answers:
1. 9.5m^2 + 1.5n
2. 41/20
3. -2.3, -1/3, √3, √7, 5.1
4. 1/9x
1. 9.5m2+1.5n
2. 4-3x
3. 31/20
4. commutative property of multiplication
5. commutative property of addition
6. -7/4,-0.3,0.1,3,7
7. 3+(-7)=-4
8. irrational numbers
9. x/2+3/4
10. 7w+5
11. 6/5+y
12. 3/z
13. 59/28
14. 1/11
15. Associative property of multiplication
16. 489
17. -24.44
18. 64/343
19. the product of 6 and a number of y
20. 85 mph
21. -8d + 3w
22. 132
23. -7s
24. 204-70-25
25. -1/6
26. the product is rational
27. 4+6, 3.15 x 4.6, 64x25
28. in order to find out how much she paid per apple
The final tally for the real answers are as follows...
1 A
2 B
3 C
4 C
5 C
6 B
7 D
8 B
9 A
10 D
11 A
12 A
13 B
14 A
15 B
16 B
17 A
18 A
19 A
20 C
21 B
22 A
23 B
24 A
25 A
26 B
27 A, C, D
28 A
Hoping that my headache saves you during the test =)
I got a 21/30 using their answers, so I guess I'll be working on some extra credit later.
we could put them in word form
The answer to 1 and 4 is to rearrange to collect like terms.
I suspect _Question_ 4 is wrong.
3x - 2/9
was probably meant to be :
(3x-2)/9