Mathematics:
Examples
Problems
Arithmetic
Calculators
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Subtract till 100
Calculate:
Number of examples:
Numerical difficulty:
Range of values:
Multiplicity:
19

6
=
56

46
=
82

28
=
75

12
=
49

37
=
52

38
=
68

23
=
46

7
=
32

20
=
54

22
=
all examples
3903
5th grade (10y)
387
6th grade (11y)
961
7th grade (12y)
1557
8th grade (13y)
2045
9th grade (14y)
1832
high school
1313
equation
945
reason
649
right triangle
535
time
534
system of equations
522
triangle
480
area of shape
458
Pythagorean theorem
455
volume
449
percentages
415
unit conversion
413
expression of a variable from formula
409
length
408
body volume
381
The most difficult examples
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