1. Mrs. Ennis Decimals Part 1 Lesson Twenty-Six
Math Grade 4
Mrs. Ennis
Decimals
Part 1
Lesson Twenty-Six

2. E = 392
3006 – 85 = G
M ÷ 6 = 6
4 x 5 = J x 4
2 x 3 x V = 26
It is 12:30 now. What time was it 20 minutes ago?

3. 7. What is the perimeter of a regular pentagon with side 6cm?
8. Write in standard form: 2 thousands, 4 tens, 3 ones, 8 hundreds?

4. Pam has $2. 50 in quarters and $0. 95 in nickels
Pam has $2.50 in quarters and $0.95 in nickels. How many coins does she have?
Will collected 856 cans one week and 1,026 cans the next week. How many more cans must be collected to reach his goal of 3,045 cans?

6. Decimal Place Value

7. .1 2 3, 4 5 6, 7 8 9 Hundredths Millions Hundred Thousands
Ten Thousands
Thousands
Ones
Tenths
Hundreds
Tens

8. Reading Decimals Read the number before the decimal point.
Say “and” when you get to the decimal.
Read the number after the decimal.
Say the name of the place that the decimal ends in.

9. 8,243.67 Example Eight thousand, two hundred forty-three and
sixty-seven
hundredths

10. Example
57.26
Fifty seven
and
twenty-six
hundredths

11. Example
324.03
Three hundred twenty-four
and
three
hundredths

12. Example
89.7
Eighty-nine
and
seven
tenths

13. Example
4002.3
Four thousand two
and
three
tenths

14. Expanded Form
Write the number that appears before the decimal point in expanded form.
For decimals, place a zero in the ones place.
Also, substitute zeroes for all spaces after the decimal point that come before the digit that you are working with.

15. Example: Write 13.36 in expanded form.
10 + 3 +
0.3 +
0.06
Remember, deal with the number before the decimal first.
Then, do the decimal part.

16. Example: Write 207.45 in expanded form. +
0.4 +
0.05
Remember, deal with the number before the decimal first.
Then, do the decimal part.

17. Example: Write 1,564.82 in expanded form. +
0.8 +
0.02
Remember, deal with the number before the decimal first.
Then, do the decimal part.

18. You try it: Write 590.73 in expanded form.+ +
0.7
0.03

19. You try it: Write 1230.06 in expanded form. +
0.06

20. From Words to Standard Form
Read everything before the word “and.” Write that number.
Place a decimal point at the word “and.”
Read the last word of the sentence to see how many decimal places you need.
Fill in the decimal places with your number. Use zeroes to fill any empty spaces.

21. Example: Write the following number in standard form: two hundred six and fifty-four hundredths
206 . 54
The word “hundredths” indicates that we need two decimal places.

22. Example: Write the following number in standard form: ninety-one and twenty-two hundredths91 . 22
The word “hundredths” indicates that we need two decimal places.

23. Example: Write the following number in standard form: four thousand seventeen and three hundredths
4017 . 03
The word “hundredths” indicates that we need two decimal places.

24. 820 . 4 The word “tenths” indicates that we need one decimal place.
Example: Write the following number in standard form: eight hundred twenty and four tenths
820 . 4
The word “tenths” indicates that we need one decimal place.

25. 71 . 9 The word “tenths” indicates that we need one decimal place.
Example: Write the following number in standard form: seventy-one and nine tenths 71 . 9
The word “tenths” indicates that we need one decimal place.

26. 130 . 5 The word “tenths” indicates that we need one decimal place.
Example: Write the following number in standard form: one hundred thirty and five tenths
130 . 5
The word “tenths” indicates that we need one decimal place.

27. One Whole 10 1
can also be written

28. Writing Fractions as Decimals9 10 .9
can also be written

29. Writing Fractions as Decimals1 10 .1
can also be written

30. Writing Fractions as Decimals4 10 .4
can also be written

31. Writing Fractions as Decimals3 10 .3
can also be written

32. Writing Fractions as Decimals6 10 .6
can also be written

33. Writing Fractions as Decimals45
100
.45
can also be written

34. Writing Fractions as Decimals26
100
.26
can also be written

35. Writing Fractions as Decimals31
100
.31
can also be written

36. Writing Fractions as Decimals59
100
.59
can also be written

37. Writing Fractions as Decimals20
100
.20
can also be written

38. Writing Fractions as Decimals77
100
.77
can also be written

39. Also remember that .3
.30
is equal to

40. Also remember that .2
.20
is equal to

41. Also remember that .5
.50
is equal to

42. Also remember that .8
.80
is equal to

43. Also remember that .1
.10
is equal to

44. Online Practice http://www.aaamath.com/dec37bx2.htm

45. Math Fun:
The Fugitive Feline opened at movie theaters on Monday. The 1st day 35 people saw the movie. On the 2nd day 16 more people came than on the 1st day, so that 86 people had seen the movie after the 2nd day. If each day 16 more people saw the movie than the day before, on what day would 700 people have seen the
movie?
Hint: Make a chart!

46. Answer: Solution: 700 people will have seen the movie after
the 8th day.

47. Resources: