METODORF.COM
Interactive Portal-Book of Self-Development Methods

Arithmetic ability: Level One: Mental subtraction of two-digit numbers.

Return to exercise selection

78 - 30 =

92 - 83 =

73 - 49 =

65 - 51 =

63 - 42 =

96 - 19 =

54 - 34 =

60 - 53 =

26 - 11 =

85 - 78 =

Return to exercise selection

© Oleg Akvan
metodorf.com



Comment block
No one has left comments here yet, be the first!

Leave a comment:
Name *
Email
Проверка *  3,3,7,9
(введите без запятых)
Message*

* - required fields
(E-mail the address is visible only to registered users)



Site Map  |  Aboute us  |  Guest book  |  Feedback  |  Policy