m203 mental math practice deck 1
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![Page 1: M203 Mental Math Practice Deck 1](https://reader037.vdocuments.mx/reader037/viewer/2022102716/546b5ea5af79599d7d8b5a8d/html5/thumbnails/1.jpg)
M203 – Math Olympiad Level 3Mental Math Practice Deck 1
Copyrights © 2006-2014- Avid Academy
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Guided Practice Questions
Attempt each question in 10 seconds or less, then view the following slide for the correct answer.
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6 + 3 + 5 + 7 =
Practice 1
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(3 + 7) + 6 + 5 =
21
Practice 1
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Practice 2
2 + 9 + 3 + 8 =
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(2 + 8) + 9 + 3 =
22
Practice 2
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Practice 3
6 + 7 + 9 + 1 + 4 =
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(6 + 4) + (9 + 1) + 7 =
27
Practice 3
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Practice 4
8 + 1 + 5 + 1 + 5 =
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(5 + 5) + (8 + 1 + 1) =
20
Practice 4
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Practice 5
4 + 7 + 2 + 6 + 3 =
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(4 + 6) + (7 + 3) + 2 =
22
Practice 5
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Practice 6
6 + 9 + 2 + 1 + 5 + 3 =
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(9 + 1) + (2 + 5 + 3) + 6 =
26
Practice 6
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Practice 7
4 + 3 + 8 + 9 + 2 + 7 =
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(3 + 7) + (8 + 2) + 4 + 9 =
33
Practice 7
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Practice 8
5 + 1 + 7 + 4 + 8 =
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(5 + 1 + 4) + 7 + 8 =
25
Practice 8
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Practice 9
1 + 6 + 8 + 9 + 4 =
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(1 + 9) + (6 + 4) + 8 =
28
Practice 9
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Practice 10
8 + 1 + 7 + 2 + 2 =
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(8 + 2) + (7 + 1 + 2) =
20
Practice 10
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Practice 11
92 + 57 + 8 + 43 =
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(92 + 8) + (57 + 43) =
200
Practice 11
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Practice 12
86 + 24 + 14 + 26 =
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(86 + 14) + 24 + 26=
250
Practice 12
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Practice 13
35 + 78 + 65 =
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(35 + 65) + 78 =
178
Practice 13
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Practice 14
27 + 74 + 73 + 26 =
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(27 + 73) + (74 + 26) =
200
Practice 14
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Practice 15
35 + 45 + 55 + 65 =
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(35 + 65) + (45 + 55) =
200
Practice 15
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Practice 16
17 + 46 + 93 + 54 =
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(46 + 54) + 93 + 17 =
210
Practice 16
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Practice 17
74 + 18 + 21 + 82 =
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(18 + 82) + 74 + 21=
195
Practice 17
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Practice 18
9 + 11 + 23 + 77 + 91 =
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(9 + 91) + (23 + 77) + 11 =
211
Practice 18
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Practice 19
38 + 62 + 67 + 36 =
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(38 + 62) + 67 + 36 =
203
Practice 19
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Practice 20
98 + 12 + 1 + 88 + 1=
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(98 + 1 + 1) + (12 + 88) =
200
Practice 20
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Practice 21
1 + 3 + 5 + 5 + 7 =
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(3 + 7) + (5 + 5) + 1 =
21
Practice 21
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Practice 22
1 + 6 + 3 + 9 + 4 =
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(1 + 9) + (6 + 4) + 3 =
23
Practice 22
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Practice 23
96 + 87 + 12 + 4 =
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(96 + 4) + 87 + 12 =
199
Practice 23
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Practice 24
7 + 2 + 5 + 8 =
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(2 + 8) + 7 + 5 =
22
Practice 24
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Practice 25
19 + 78 + 22 + 81 + 29 =
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(19 + 81) + (78 + 22) + 29 =
229
Practice 25
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Practice 26
5 + 34 + 4 + 66 + 3 =
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(34 + 66) + 5 + 4 + 3 =
112
Practice 26
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Practice 27
83 + 43 + 27 + 57 =
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(43 + 57) + 83 + 27 =
210
Practice 27
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Practice 28
7 + 23 + 77 + 33 =
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(23 + 77) + 7 + 33 =
140
Practice 28
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Practice 29
4 + 5 + 6 + 2 + 7 =
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(4 + 6) + 5 + 2 + 7 =
24
Practice 29
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Practice 30
16 + 92 + 6 + 84 =
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(16 + 84) + 92 + 6 =
198
Practice 30
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Practice 31
8 + 6 + 1 + 42 + 4 =
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(8 + 42) + (6 + 4) + 1 =
61
Practice 31
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Practice 32
19 + 5 + 11 + 5 =
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(19 + 11) + (5 + 5) =
40
Practice 32
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Practice 33
39 + 45 + 61 + 5 + 50 =
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(39 + 61) + (45 + 5 + 50) =
200
Practice 33
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Practice 34
93 + 18 + 3 + 22 + 4 =
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(93 + 3 + 4) + 18 + 22 =
140
Practice 34
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Practice 35
1 + 4 + 7 + 9 + 3 + 5 =
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(1 + 9) + (7 + 3) + 4 + 5 =
29
Practice 35
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Practice 36
47 + 19 + 31 + 53 =
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(47 + 53) + 19 + 31 =
150
Practice 36
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Practice 37
27 + 60 + 45 + 13 =
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(27 + 60 + 13) + 45 =
145
Practice 37
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Practice 38
8 + 5 + 4 + 5 + 6 + 1 =
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(5 + 5) + (4 + 6) + 8 + 1 =
29
Practice 38
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Practice 39
23 + 34 + 66 + 77 =
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(23 + 77) + (34 + 66) =
200
Practice 39
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Practice 40
1 + 8 + 7 + 1 + 4 =
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(1 + 8 + 1) + 7 + 4 =
21
Practice 40
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Practice 41
15 + 9 + 5 + 11 + 7 =
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(15 + 5) + (9 + 11) + 7 =
47
Practice 41
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Practice 42
8 + 13 + 9 + 2 + 7 =
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(8 + 2) + (13 + 7) + 9 =
39
Practice 42
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Practice 43
6 + 11 + 3 + 14 + 9 =
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(6 + 14) + (11 + 9) + 3 =
43
Practice 43
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Practice 44
98 + 7 + 1 + 3 + 2 =
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(98 + 2) + (7 + 3) + 1 =
111
Practice 44
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Practice 45
1 + 7 + 2 + 5 + 6 + 5 =
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(1 + 7 + 2) + (5 + 5) + 6 =
26
Practice 45
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Mental Math Self-Quiz
On a separate sheet of paper record your answers to the following 10 questions. Then
check your answers with the slide that follows.
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Quiz Question 1
1 + 3 + 5 + 7 + 9 =
![Page 95: M203 Mental Math Practice Deck 1](https://reader037.vdocuments.mx/reader037/viewer/2022102716/546b5ea5af79599d7d8b5a8d/html5/thumbnails/95.jpg)
Quiz Question 2
6 + 3 + 7 + 4 + 8 =
![Page 96: M203 Mental Math Practice Deck 1](https://reader037.vdocuments.mx/reader037/viewer/2022102716/546b5ea5af79599d7d8b5a8d/html5/thumbnails/96.jpg)
Quiz Question 3
1 + 5 + 4 + 8 + 1 + 2 =
![Page 97: M203 Mental Math Practice Deck 1](https://reader037.vdocuments.mx/reader037/viewer/2022102716/546b5ea5af79599d7d8b5a8d/html5/thumbnails/97.jpg)
Quiz Question 4
21 + 82 + 79 + 18 =
![Page 98: M203 Mental Math Practice Deck 1](https://reader037.vdocuments.mx/reader037/viewer/2022102716/546b5ea5af79599d7d8b5a8d/html5/thumbnails/98.jpg)
Quiz Question 5
34 + 46 + 54 + 66 =
![Page 99: M203 Mental Math Practice Deck 1](https://reader037.vdocuments.mx/reader037/viewer/2022102716/546b5ea5af79599d7d8b5a8d/html5/thumbnails/99.jpg)
Quiz Question 6
92 + 47 + 8 + 12 + 53 =
![Page 100: M203 Mental Math Practice Deck 1](https://reader037.vdocuments.mx/reader037/viewer/2022102716/546b5ea5af79599d7d8b5a8d/html5/thumbnails/100.jpg)
Quiz Question 7
9 + 27 + 91 + 25 + 73 =
![Page 101: M203 Mental Math Practice Deck 1](https://reader037.vdocuments.mx/reader037/viewer/2022102716/546b5ea5af79599d7d8b5a8d/html5/thumbnails/101.jpg)
Quiz Question 8
8 + 2 + 1 + 7 + 9 + 5 =
![Page 102: M203 Mental Math Practice Deck 1](https://reader037.vdocuments.mx/reader037/viewer/2022102716/546b5ea5af79599d7d8b5a8d/html5/thumbnails/102.jpg)
Quiz Question 9
14 + 90 + 1 + 86 + 7 =
![Page 103: M203 Mental Math Practice Deck 1](https://reader037.vdocuments.mx/reader037/viewer/2022102716/546b5ea5af79599d7d8b5a8d/html5/thumbnails/103.jpg)
Quiz Question 10
32 + 64 + 3 + 36 + 4 =
![Page 104: M203 Mental Math Practice Deck 1](https://reader037.vdocuments.mx/reader037/viewer/2022102716/546b5ea5af79599d7d8b5a8d/html5/thumbnails/104.jpg)
Answers to Quiz Questions:
1. 252. 283. 214. 2005. 200
6. 2127. 2258. 329. 19810. 139
![Page 105: M203 Mental Math Practice Deck 1](https://reader037.vdocuments.mx/reader037/viewer/2022102716/546b5ea5af79599d7d8b5a8d/html5/thumbnails/105.jpg)
You may repeat this deck for additional practice.