Question

Рассуждая так же, составь равенства по образцу:в первом столбике последним должно быть равенство 10×10=100
10×2=20 2×10 20÷2=10 20÷10
10×3= ··········· ··········· ···········
10×4= ··········· ··········· ···········
··········· ·········· ··········· ···········

Answer 1

10•3=30. 3•10. 30:3=10. 30:10
10•4=40. 4•10. 40:4=10. 40:10