Easy level

This level has a single operation per question and the terms are at most 4 digits (including decimals). All answers have 4 digits or less. This is (much) simpler than a real trading test. If you want you can also try this level as a test (posts to !) or set up a custom exercise.

Medium level

This level has a maximum of 4 operations per question and all terms are at most 5 digits including the decimal part. All answers have 5 digits or less. This is about the level of some trading tests. If you want you can also try this level as a test (posts to !) or set up a custom exercise.

Hard level

This level has a maximum of 6 operations per question and all terms are at most 6 digits including the decimal part. All answers have 5 digits or less. This is beyond the level of most trading tests. If you want you can also try this level as a test (posts to !) or set up a custom exercise.

250 ) { $_GET['questionCount'] = 80; } if( ! isset( $_GET['maxTermLength'] ) || ! is_numeric( $_GET['maxTermLength'] ) || $_GET['maxTermLength'] <= 0 || $_GET['maxTermLength'] > 20 ) { $_GET['maxTermLength'] = 6; } if( ! isset( $_GET['maxTermDecimalLength'] ) || ! is_numeric( $_GET['maxTermDecimalLength'] ) || $_GET['maxTermDecimalLength'] <= 0 || $_GET['maxTermDecimalLength'] > 20 ) { $_GET['maxTermDecimalLength'] = 3; } if( ! isset( $_GET['maxAnswerLength'] ) || ! is_numeric( $_GET['maxAnswerLength'] ) || $_GET['maxAnswerLength'] <= 0 || $_GET['maxAnswerLength'] > 20 ) { $_GET['maxAnswerLength'] = 4; } if( ! isset( $_GET['maxAnswerDecimalLength'] ) || ! is_numeric( $_GET['maxAnswerDecimalLength'] ) || $_GET['maxAnswerDecimalLength'] < 0 || $_GET['maxAnswerDecimalLength'] > 20 ) { $_GET['maxAnswerDecimalLength'] = 3; } if( ! isset( $_GET['minOperations'] ) || ! is_numeric( $_GET['minOperations'] ) || $_GET['minOperations'] <= 0 || $_GET['minOperations'] > 9 ) { $_GET['minOperations'] = 1; } if( ! isset( $_GET['maxOperations'] ) || ! is_numeric( $_GET['maxOperations'] ) || $_GET['maxOperations'] <= 0 || $_GET['maxOperations'] > 9 ) { $_GET['maxOperations'] = 4; } if( $_GET['minOperations'] > $_GET['maxOperations'] ) { $_GET['minOperations'] = 1; $_GET['maxOperations'] = 4; } if( ! isset( $_GET['mode'] ) || ( //$_GET['mode'] != 'exam' && $_GET['mode'] != 'test' && $_GET['mode'] != 'practice' ) ) { $_GET['mode'] = 'practice'; } if( ! isset( $_GET['useVariableInteger'] ) && ! isset( $_GET['useVariableDouble'] ) ) { $_GET['useVariableInteger'] = 'on'; $_GET['useVariableDouble'] = 'on'; } if( ! isset( $_GET['useOperatorAdd'] ) && ! isset( $_GET['useOperatorSubtract'] ) && ! isset( $_GET['useOperatorMultiply'] ) && ! isset( $_GET['useOperatorDivide'] ) ) { $_GET['useOperatorAdd'] = 'on'; $_GET['useOperatorSubtract'] = 'on'; $_GET['useOperatorMultiply'] = 'on'; $_GET['useOperatorDivide'] = 'on'; } // FIXME this prevent do..while deadlocks below but it's not nice if( ! isset( $_GET['useVariableInteger'] ) && isset( $_GET['useVariableDouble'] ) && ! isset( $_GET['useVariableFactor'] ) && ! isset( $_GET['useOperatorAdd'] ) && ! isset( $_GET['useOperatorSubtract'] ) && isset( $_GET['useOperatorMultiply'] ) && ! isset( $_GET['useOperatorDivide'] ) && ! isset( $_GET['optimizeSolvability'] ) ) { die( 'Impossible combination to guarantee easy exercises, disable optimizeSolvability if you really want this.' ); } // Show setup? if( isset( $_GET['showSetup'] ) ) { ?> Set up exercise

In practice mode the answers are selectable on the same page and no scoring will be done. In test mode you need to click a "Finished" button and your score will be calculated.

# Questions
Term & answer sizes
Max term length	(total # of digits, including fraction)
Max term decimal length	(# of digits after ., if variable is a double)
Max answer length	(total # of digits)
Max answer decimal length	(# of digits after ., if used)
Operations
Min operations
Max operations

Variables
Integer
Double	(This includes floats)
Use negative values for variables
Operators
Add (+)
Subtract (-)
Multiply (*)
Divide (/)
Optimizations
Optimize solvability	Limits complexity in some situations.
Prevent too simple	Guarantee operator changing & no arbitragable values.

Scoring

You get one point for every correct answer. Deduct one point for each error. If you skip a question or run out of time in a timed test, all following questions are not used in your score. Time yourself to 6 seconds per question. Generally you need to pass 55 out of 80 questions or ~70% of the maximum score, but higher is always better.

Manual

The answer to the test will be printed right next to it in the site's background color. You can use CTRL+A, Command+A or use the mouse to select all text on this page.

Questions

1)	0.9 - -976	976.9
2)	0.2 + 9	9.2
3)	9 - 55.6	-46.6
4)	5312 - 730	4582
5)	-16 + 7513	7497
6)	0.334 + 0.08	0.414
7)	0.07 - -7.85	7.92
8)	1.725 + -0.008	1.717
9)	17.25 - 9.87	7.38
10)	60.2 - -2.57	62.77
11)	-493 + 6104	5611
12)	9 / 0.096	93.75
13)	2473 - 3109	-636
14)	-6 / 2	-3
15)	9 + 0.006	9.006
16)	-442 - 8	-450
17)	88 + -9.6	78.4
18)	-30 - 79	-109
19)	5.2 + 135	140.2
20)	0.9 + -1	-0.1
21)	97 + 98.5	195.5
22)	-0.1 - 1	-1.1
23)	-62 + 5567	5505
24)	7 - 9.8	-2.8
25)	167 - 1	166
26)	902 + -57.8	844.2
27)	397 - 9	388
28)	0.1 + 0.002	0.102
29)	-4.3 - 91	-95.3
30)	0.5 + 2.7	3.2
31)	0.04 - -41	41.04
32)	-2 + 54	52
33)	-3 * 8	-24
34)	0.92 + 89.8	90.72
35)	0.006 + 0.072	0.078
36)	0.001 - -4.7	4.701
37)	465 + 20	485
38)	-0.05 * 79	-3.95
39)	30.58 + 9.76	40.34
40)	0.3 + 6	6.3
41)	6295 - 11	6284
42)	39 + 3245	3284
43)	9 + 0.096	9.096
44)	0.09 - 0.52	-0.43
45)	2.3 + 0.274	2.574
46)	-44 - 768	-812
47)	7 + -0.06	6.94
48)	0.06 + 9.63	9.69
49)	4 - 0.03	3.97
50)	62 - 6	56
51)	0.5 + -41.8	-41.3
52)	-5 / 0.1	-50
53)	6322 + -5	6317
54)	7 - -0.5	7.5
55)	6 * 0.1	0.6
56)	2.826 + 0.71	3.536
57)	1.8 + -21	-19.2
58)	37 - 58	-21
59)	407 + 908	1315
60)	-6.3 * 3	-18.9
61)	8 * -2	-16
62)	0.4 * 5	2
63)	3 - -7.7	10.7
64)	54.4 / -68	-0.8
65)	5.1 - 0.067	5.033
66)	6 * 0.9	5.4
67)	2 + 28.35	30.35
68)	1.1 - 0.91	0.19
69)	5 - 0.495	4.505
70)	-0.07 + 0.2	0.13
71)	-60 + 4	-56
72)	1 - 0.3	0.7
73)	5 * 1.781	8.905
74)	0.26 * 57	14.82
75)	9 + -0.09	8.91
76)	-68 + 321	253
77)	0.4 - 0.004	0.396
78)	5.1 * -17	-86.7
79)	4 - 869	-865
80)	9 * 106	954

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Test: Easy | Medium | Hard
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