Open-ended explanations may use different wording while showing the same reasoning.
Fractions and decimals
1. 4/9
2. 3
3. 27
4. 7.405
5. 6
6. 7/10, 0.7, and 70%
Ratios and rates
7. 12 cups
8. 26 miles per gallon
9. 12 ounces for $3.72; $0.31 per ounce versus $0.33
10. n = 45
11. 84 miles
Percent
12. 84
13. 70%
14. $40
15. 8.5%
16. $5.40 tip; $41.40 total
Negative numbers
17. -8, -3, 0, 2, 4
18. -4
19. 11 degrees
20. 13 units
21. -77 feet
Expressions and equations
22. 10
23. 3x + 11
24. x = 32
25. 2x + 7 = 31
26. 12x - 30
27. n = 7
Geometry
28. 42 square cm
29. 27 cubic m
30. 7 feet; perimeter 38 feet
31. 6 units
32. Acute; 28 degrees
33. 60 square units
34. 108 square inches
Word problems
35. $98
36. 280 pages
37. 300 grams
38. 2.25 feet
Challenge
39. Yes; both equal 20
40. 21