3 + 3 + 3 + 3 = _
5 × 3 = 15
3 × 5 = 15
5 × 5 = 15
4 × 2 = 8
4 × 4 = 8
6 counters, 2 equal groups
6 ÷ 2 = 3
6 ÷ 3 = 2
6 ÷ 3 = 3
10 counters, 5 equal groups
10 ÷ 5 = 2
10 ÷ 5 = 5
10 ÷ 2 = 5