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Estimating and Rounding quiz

Estimating and Rounding quiz

Estimating & Rounding QUIZ
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Slide 1: Slide
MathematicsPrimary Education

This lesson contains 19 slides, with interactive quizzes and text slides.

Items in this lesson

Estimating & Rounding QUIZ

Slide 1 - Slide

Round this number to the nearest 10
76
A
75
B
70
C
80
D
66

Slide 2 - Quiz

Round this number to the nearest 10
83
A
80
B
83
C
90
D
88

Slide 3 - Quiz

Estimate this number to the nearest 100
567

A
456
B
600
C
500
D
700

Slide 4 - Quiz

Slide 5 - Slide

Round 235 to the nearest ten.
A
200
B
345
C
240
D
340

Slide 6 - Quiz

Round this number to the nearest 10
666
A
345
B
670
C
660
D
680

Slide 7 - Quiz

What is Rounding?
 
  • When a question asks you to round or estimate, you are being asked "about how many?"

  • Your approximate number will help you solve problems that maybe hard to solve.

Slide 8 - Slide

What to do?
  •  When rounding to the nearest ten up to 100. Your answer will be one of the numbers below because they are multiples ten.

  • 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100.
  • The rule to rounding 0, 1, 2, 3, 4 round down.
      5, 6, 7, 9, 9 round up.

Slide 9 - Slide

Rounding poem
Remembering this poem with the rule will also help you round.

  • Find your number.
  • Look right next door.
  • 4 or less just ignore.
  • 5 or more, add 1 more.

Slide 10 - Slide

Using a number line
Remember the poem.
Round 36 to the nearest ten.
Put the circle around that number.
31
32
33
34
35
36
37
38
39
30
40

Slide 11 - Drag question

Using a number line
Round 74 to the nearest ten.
Put the circle around that number.
71
72
73
74
75
76
77
78
79
70
80
71
72
73
74
75
76
77
78
79
70

Slide 12 - Drag question

Your turn to try!

Slide 13 - Slide


Round 5 to the nearest ten.
1
2
3
4
5
6
7
8
9
0
10
A
0
B
10
C
6
D
20

Slide 14 - Quiz


Round 19 to the nearest ten.
11
12
13
14
15
16
17
18
19
10
20
A
20
B
10
C
19
D
11

Slide 15 - Quiz


Round 73 to the nearest ten.
71
72
73
74
75
76
77
78
79
70
80
A
70
B
75
C
80
D
85

Slide 16 - Quiz


Round 77 to the nearest ten.
71
72
73
74
75
76
77
78
79
70
80
A
70
B
75
C
80
D
85

Slide 17 - Quiz


Round 92 to the nearest ten.
91
92
93
94
95
96
97
98
99
90
100
A
90
B
95
C
97
D
100

Slide 18 - Quiz

Keep the poem in mind
The rule to rounding 0, 1, 2, 3, 4 round down.
5, 6, 7, 9, 9 round up.

  • Find your number.
  • Look right next door.
  • 4 or less just ignore.
  • 5 or more, add 1 more.

Slide 19 - Slide