Cora Stage E5 Add tens then the ones

Add the tens and then add the ones.
	60+20=80 5+3=8 80+8=88
	50+30=80 3+5=8 80+8=88
	40+40=80 4+3=7 80+7=87

Add the tens		Add the tens and then the ones
30 + 20 = 50	56 + 30 =86	64 + 22 = 86	55 + 12 =67
40 + 40 =80	47 + 30 =77	34 + 25 =59	45 + 42 =87
10 + 70 =80	32 + 60 =92	21 + 25 =46	31 + 42 =73
23 + 40 = 63	28 + 40 =68	33 + 33 =66	42 + 51 =93
37 + 30 =67	68 + 30 =98	71 + 24 =95	24 + 15 =39
74 + 10 =84	82 + 10 =92	62 + 31 =93	77 + 11 =88