1. 11-1 Customary Units of
Length
Math Notes
Algebra and Functions 2.1

2. What you’re learning today...

3. What you’re learning today...
Algebra and Function 2.1 - Convert one unit
of measurement to another

4. What you’re learning today...
Algebra and Function 2.1 - Convert one unit
of measurement to another
Converting 18 inches into 1 foot and 6
inches (1’6”).

5. What you’re learning today...
Algebra and Function 2.1 - Convert one unit
of measurement to another
Converting 18 inches into 1 foot and 6
inches (1’6”).
Converting 48 inches into 1 yard and a
foot.

6. Customary Units of Length

7. Customary Units of Length
12 inches (in.) = 1 foot (ft)

8. Customary Units of Length
12 inches (in.) = 1 foot (ft)
36 inches = 1 yard

9. Customary Units of Length
12 inches (in.) = 1 foot (ft)
36 inches = 1 yard
3 feet = 1 yard (yd)

10. Customary Units of Length
12 inches (in.) = 1 foot (ft)
36 inches = 1 yard
3 feet = 1 yard (yd)
5,280 feet = 1 mile (mi)

11. Measure the model car
to the given unit.
Nearest inch

12. Measure the model car
to the given unit.
Nearest inch

13. Measure the model car
to the given unit.
Nearest inch

14. Measure the model car
to the given unit.
Nearest inch

15. Measure the model car
to the given unit.
Nearest inch
Is is closer to
2 inches or
3 inches?

16. Measure the model car
to the given unit.
Nearest inch
Is is closer to
2 inches or
3 inches?
Answer: 3 inches

17. Measure the model car
to the given unit.
1
Nearest 2 inch

18. Measure the model car
to the given unit.
1
Nearest 2 inch
0” 1” 2” 3”

19. Measure the model car
to the given unit.
1
Nearest 2 inch
0” 1” 2” 3”

20. Measure the model car
to the given unit.
1
Nearest 2 inch
0” 1” 2” 3”
1 1 1
2 12 22

21. Measure the model car
to the given unit.
1
Nearest 2 inch
0” 1” 2” 3”
Answer: 2 1
2
1 1 1
2 12 22

22. Measure the model car
to the given unit.
1
Nearest 4 inch

23. Measure the model car
to the given unit.
1
Nearest 4 inch
0” 1” 2” 3”

24. Measure the model car
to the given unit.
1
Nearest 4 inch
0” 1” 2” 3”

25. Measure the model car
to the given unit.
1
Nearest 4 inch
0” 1” 2” 3”

26. Measure the model car
to the given unit.
1
Nearest 4 inch
0” 1” 2” 3”
1 23 1 23 1 23
444 444 444

27. Measure the model car
to the given unit.
1
Nearest 4 inch
0” 1” 2” 3”
2 3
4
1 23 1 23 1 23
444 444 444

28. Measure the model car to the given unit.
Nearest
1 inch
8

29. Measure the model car to the given unit.
Nearest
1 inch
8

30. Measure the model car to the given unit.
Nearest
1 inch
8

31. Measure the model car to the given unit.
Nearest
1 inch
1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7
8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8

32. Measure the model car to the given unit.
Nearest
1 inch
1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7
8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
2 5
8

33. 2 ft 3 in. = ___ in.

34. 2 ft 3 in. = ___ in.
Step ONE: Take a look at the largest unit of
measurement. Feet or inches?

35. 2 ft 3 in. = ___ in.
Step ONE: Take a look at the largest unit of
measurement. Feet or inches?
2 feet

36. 2 ft 3 in. = ___ in.
Step ONE: Take a look at the largest unit of
measurement. Feet or inches?
2 feet
Step TWO: Remember that 1 foot is 12 inches. There
are 2 feet. What’s 12 x 2?

37. 2 ft 3 in. = ___ in.
Step ONE: Take a look at the largest unit of
measurement. Feet or inches?
2 feet
Step TWO: Remember that 1 foot is 12 inches. There
are 2 feet. What’s 12 x 2?
24 inches

38. 2 ft 3 in. = ___ in.
Step ONE: Take a look at the largest unit of
measurement. Feet or inches?
2 feet
Step TWO: Remember that 1 foot is 12 inches. There
are 2 feet. What’s 12 x 2?
24 inches
Step THREE: Add the inches you converted in Step TWO
to 3 inches.

39. 2 ft 3 in. = ___ in.
Step ONE: Take a look at the largest unit of
measurement. Feet or inches?
2 feet
Step TWO: Remember that 1 foot is 12 inches. There
are 2 feet. What’s 12 x 2?
24 inches
Step THREE: Add the inches you converted in Step TWO
to 3 inches.
24” + 3” = 27”

40. 27 in. = ___ ft.

41. 27 in. = ___ ft.
Step ONE: Remember that for every 12 inches is 1 foot.

42. 27 in. = ___ ft.
Step ONE: Remember that for every 12 inches is 1 foot.
Step TWO: Divide 27 inches by 12.

43. 27 in. = ___ ft.
Step ONE: Remember that for every 12 inches is 1 foot.
Step TWO: Divide 27 inches by 12.
2 r3
12 27
24
3

44. 27 in. = ___ ft.
Step ONE: Remember that for every 12 inches is 1 foot.
Step TWO: Divide 27 inches by 12.
2 r3
12 27
24
3
Step THREE: The 2 in the quotient is how many feet.
The remainder is still measured in inches.

45. 27 in. = ___ ft.
Step ONE: Remember that for every 12 inches is 1 foot.
Step TWO: Divide 27 inches by 12.
2 r3
12 27
24
3
Step THREE: The 2 in the quotient is how many feet.
The remainder is still measured in inches.
2 r3 = 2 feet and 3 inches

46. Find 1 ft 9 in. + 1 ft 6 in.

47. Find 1 ft 9 in. + 1 ft 6 in.
1 ft 9 in.

48. Find 1 ft 9 in. + 1 ft 6 in.
1 ft 9 in.
1 ft 6 in.

49. Find 1 ft 9 in. + 1 ft 6 in.
1 ft 9 in.
+ 1 ft 6 in.

50. Find 1 ft 9 in. + 1 ft 6 in.
1 ft 9 in.
+ 1 ft 6 in.
2 ft 15 in.

51. Find 1 ft 9 in. + 1 ft 6 in.
1 ft 9 in.
+ 1 ft 6 in.
2 ft 15 in.
Pretty EASY, but...

52. Find 1 ft 9 in. + 1 ft 6 in.
1 ft 9 in.
+ 1 ft 6 in.
2 ft 15 in.
Pretty EASY, but...
You can’t leave 15 in. as 15 in.

53. Find 1 ft 9 in. + 1 ft 6 in.
1 ft 9 in.
+ 1 ft 6 in.
2 ft 15 in.
Pretty EASY, but...
You can’t leave 15 in. as 15 in.
15 in. = ___ ft

54. Find 1 ft 9 in. + 1 ft 6 in.
1 ft 9 in.
+ 1 ft 6 in.
2 ft 15 in.
Pretty EASY, but...
You can’t leave 15 in. as 15 in.
15 in. = ___ ft
1 ft and 3 in. (Add this to 2 ft)

55. Find 1 ft 9 in. + 1 ft 6 in.
1 ft 9 in.
+ 1 ft 6 in.
2 ft 15 in.
Pretty EASY, but...
You can’t leave 15 in. as 15 in.
15 in. = ___ ft
1 ft and 3 in. (Add this to 2 ft)
2 ft + 1 ft 3 in. = 3 ft 3 in.