Page 23 - Thanks Donation to EBOOK 123 easy teaching math A+ ok

Addition
Addition
123 EASY TEACHING
123 EASY TEACHING

12+1 10+2+ 1 10+3

12+2 10+2+ 2 10+4

12+3 10+2+ 3 10+5

12+4 10+2+ 4 10+6

12+5 10+2+ 5 10+7

12+6 10+2+ 6 10+ 2+6 10+8

12+7 10+2+ 7 10+ 2+7 10+9

12+8 10+2+ 8 10+ 2+8 10+10

12+9 11+1+ 9 11+ 1+9 11+10

12+10 10+2+ 10 10+ 10+2 20+2

12+11 10+2+ 10+1 10+10+ 2+1 10+10+ 3 20+3

12+12 10+2+ 10+2 10+10+ 2+2 10+10+ 4 20+4

26 27