Calculators Followup 2 T3 Wk6

Walt: We are Lreaning to Add tens and add ones.

Calculators Followup 2 W5 T3

we are learning to Adding and subtracting ten.

Calculators Followup.

we are learning to add tens. because 12+20=55,15+40=56.

Calculators Followup W3 T3

we learning to plus because 28+5=33,44+13=28,39+4=43.