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(1/4 rule). Multiplying By 25 32 x 25. 32. Divide the non-25 number by 4. Add two zeroes. . 8. +00. =. 4. = 8 00. (1/4 rule). What happens when the number is not divisible by 25?. 29 x 25. (1/4 rule). 29 x 25. What happens when the number is not divisible by 25?.

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Multiplying by 25 32 x 25

(1/4 rule)

Multiplying By 2532 x 25

32

Divide the non-25 number by 4.

Add two zeroes.

8

+00

=

4

=800


What happens when the number is not divisible by 25

(1/4 rule)

What happens when the number is not divisible by 25?

29 x 25


What happens when the number is not divisible by 251

(1/4 rule)

29 x 25

What happens when the number is not divisible by 25?

Divide the non-25 number by 4.

For each remainder, add 25

29

7

+25(1)

=

4

=725


What happens when the number is not divisible by 252

(1/4 rule)

What happens when the number is not divisible by 25?

30 x 25


What happens when the number is not divisible by 253

(1/4 rule)

30 x 25

What happens when the number is not divisible by 25?

Divide the non-25 number by 4.

For each remainder, add 25

30

7

+25(2)

=

4

=750


What happens when the number is not divisible by 254

(1/4 rule)

What happens when the number is not divisible by 25?

31 x 25


What happens when the number is not divisible by 255

(1/4 rule)

30 x 25

What happens when the number is not divisible by 25?

Divide the non-25 number by 4.

For each remainder, add 25

31

7

+25(3)

=

4

=775


Multiplying By 25 DrillDepending on how much you would like to practice, number your notebook paper 1 thru 100. For the next slides you will have 6 seconds per slide. Try doing the questions mentally.


At any point you want to stop, go to the very end of this presentation to check your answers.Award yourself 5 points for every correct answer. Deduct 4 points for every wrong answer, scratched out answer, skipped problem, and problem you had scratch work.


Multiplying By presentation to check your answers.25 DrillThe highest possible score will be 500, the lowest -400.The more you practice the better you will get! Have FUN!!


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100 x 25


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Multiplying By 25

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60) presentation to check your answers.

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22 x 25


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4 x 25


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68 x 25


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24 x 25


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43 x 25


80) presentation to check your answers.

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62 x 25


81) presentation to check your answers.

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27 x 25


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55 x 25


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16 x 25


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80 x 25


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2 x 25


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36 x 25


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77 x 25


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Multiplying by 25 Drill Answer key part one presentation to check your answers.

1) 75

2) 1125

3) 450

4) 1100

5) 475

6) 1275

7) 775

8) 800

9) 1200

10) 1850

11) 950

12) 625

13) 900

14) 1975

15) 1050

16) 975

17) 2175

18) 750

19) 2275

20) 1175

21) 325

22) 2150

23) 350

24) 1775

25) 2100

26) 2425

27) 2200

28) 1500

29) 2475

30) 1450

31) 125

32) 1900

33) 925

34) 300

35) 500

36) 1525

37) 1350

38) 1000

39) 2450

40) 2125

41) 1225

42) 1725

43) 2325

44) 2350

45) 175

46) 525

47) 375

48) 1325

49) 2025

50) 725

51) 1800

52) 1400

53) 425

54) 875

55) 1250

56) 1875

57) 2500

58) 1825

59) 25

60) 550


Multiplying by 25 Drill Answer key part two presentation to check your answers.

61) 1650

62) 100

63) 1700

64) 225

65) 200

66) 2300

67) 2075

68) 1025

69) 2375

70) 1575

71) 1150

72) 150

73) 2400

74) 1300

75) 600

76) 2050

77) 1425

78) 850

79) 1075

80) 1550

81) 2250

82) 675

83) 1375

84) 400

85) 2000

86) 50

87) 825

88) 575

89) 2225

90) 1600

91) 1625

92) 1675

93) 700

94) 900

95) 1475

96)1750

97) 250

98) 1925

99) 275

100) 1950


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