20以内连加、连减、加减混合运算.doc

6+ 2+ 7 =8 + 2 + 4 =4 + 5 + 8 =3 + 6+ 9 =8—2+6=8 + 2 + 3 =4+5+2=7 + 3 + 2 =2 + 3 + 4 =2 + 6+ 5 =4 + 4 — 2 =9 + 1 + 4 =3+ 5+ 7 =8 + 2 + 6 =6 + 3 + 8 =7 + 2— 5 =6 + 2 + 7 =7 + 3 + 5 =4+ 4+ 6 =7 + 3 + 4 =3 + 3 + 2 =9 — 2+ 7 =6 + 3 + 7 =7 + 4 + 6 =4+3+2=9 + 1 + 8 =2 + 2 + 4 =8—2+8=5+ 4+ 7 =7 + 8 + 3 =4+ 6+ 5 =8 + 2 + 5 =4 + 8 + 7 =9 — 4+ 7 =4 + 5 + 8 =6 + 4 + 7 =7 + 2 + 4 =5 + 4 + 9 =10 + 2 + 7 =8 — 2+ 7 =1 + 0 + 7 =8 + 2 + 5 =2+ 6+ 5 =5 + 2 + 2 =12 + 6 — 5 =9 — 4+ 7 =9 — 6 — 1 =5 + 4 + 6 =7+1+7=3 + 6 + 4 =7 — 7 + 5 =6 + 2+ 9 =5 + 4 + 6 =7 + 2 + 3 =6+3+4=5 + 2 + 7 =8 + 2 + 7 =8—2+3=5 + 1 + 7 =3 + 4 + 10 =6+1 + 5 =7 — 3 + 6 =8 — 3 + 7 =9—4+6=2+ 3+ 9 =11 — 1— 5 =5+2+4=7 — 2 + 7 =5 + 2 + 3 =4 + 3+ 5 =7 + 2 + 6 =17 — 7 — 3 =3+ 5+ 9 =4 + 2 — 3 =6 + 2 + 2 =6 + 2— 3 =9+1+5=19 — 9+ 1 =6+4+1=6 + 3 + 4 =3 + 3 + 1 =3 + 9+ 6 =7 + 3 + 2 =15 — 5 — 7 =3+ 6+ 5 =4 + 2 + 5 =2 + 3 + 5 =10 — 5 + 4 =10 + 8— 4 =13 — 3 — 4 =7+2+6=7 + 2 + 7 =3 — 0 + 7 =3 + 4+ 6 =7 — 2 + 9 =18-10 —4 =4 + 4 + 9 =8 + 1 + 2 =5 — 5 + 5 =9—6+4=6 + 2 + 7 =17-10 —7 =9+1+9=1 + 8 + 5 =7 — 3 + 4 =4+5+8=8 + 2 + 7 =14-10 +5 =8+2+2=6 + 3 + 9 =6 + 2 — 6 =7 + 5— 7 =6 — 3 + 9 =16-10 +3 =7+3+1=10 — 1 + 2 =8 — 7 + 6 =10 — 4 — 0 =5 + 1 + 7 =20 — 10-7 =。