Optellen tot 1000 (HTE + T = HTE) - oefening 3
Optellen tot 1000... hoe doe je dat?
665 + 60 =
( 665 +
) +
=
285 + 70 =
( 285 +
) +
=
888 + 30 =
( 888 +
) +
=
672 + 50 =
( 672 +
) +
=
429 + 90 =
( 429 +
) +
=
Antwoord controleren
OK