...blok 3 contractwerk.gif hoofdrekenen... oefening 17

Voorbeeld: 3 x 24 = 60 + 12 = 72
8 x 62 = + =
4 x 56 = + =
9 x 34 = + =
7 x 45 = + =
6 x 92 = + =
8 x 88 = + =
7 x 72 = + =
4 x 65 = + =
5 x 97 = + =
9 x 16 = + =