fact-family/add-sub-within-20/hard · Set 100
6 problems
Naam:
Klas:
Datum:
1
Write the fact family for 17, 2, 19:
=
2
Write the fact family for 19, 1, 20:
=
3
Write the fact family for 10, 6, 60:
=
4
Write the fact family for 6, 4, 10:
=
5
Write the fact family for 3, 3, 9:
=
6
Write the fact family for 18, 1, 19:
=