1 /2口算 5 3 ×3 2 =4 5 ×5 12 =0×6 5 =5 4 ÷2 1 = 23 × 94 = 9 8 ÷4=4 5 ×5 4 =5÷6 5 =3 2 ÷3 2 = 45 × 34 = 16 ÷ 23 = 34 ÷ 18 = 13 - 16 = 14 + 34 = 15 × 19 = 1÷ 34 = 45 × 14 = 37 × 710 = - 910 =10- 34 - 14 = 23 ×12= 14× 37 = 12 + 14 = 23 × 58 = 511 ÷ 611 = 49 × 19 = 35 ×15= 13 × 18 =( 14 + 13 )×4= 13 ÷ 18 = 710 × 127 = ×16×8= 518 ÷ 1227 = 1635 ÷ 47 = 716 × 167 = 12 - 13 = 14 ÷ 14 =15÷ 35 = 720 ÷ 1415 =8× 916 - 916 = 47 ÷ 114 = 23 ÷ 415 = 56 ×4÷ 15 =( 12 +) ×( 12 -)= += (4 1 +3 1 )×24=5 4 ×25=12 1 ×6= ×25+12×= 45×101= ×32×= 59 ×6=270 ÷18= - += 2 1 ×3 1 ÷2 1 ×3 1 = 18×(3 2 +6 5 +9 4 )= ―( +) =15 2 +15 3 =7÷ = ÷ = + =(3 1 +4 1 )×12=5 3 ÷ = ×5 4 ×8=10- = + + =5 4 -3 1 = 12 11 -6 5 +12 1 =8 3 ×5 2 = ÷26= += ×11-= 5 3 ×3 2 =4 5 ×5 12 =0×6 5 =0×6 5 =5 4 ÷2 1 = 5 3 ×3 2 =4 5 ×5 12 =5÷6 5 =3 2 ÷3 2 =4 1 ÷3 1 = 2 /29 8 ÷4=4 5 ×5 4 =6 5 ×5 2 =8 3 ÷3=36×2 1 = 13 2 ×2= 26 5 ×13=6 5 ÷5=9 5 ×18=7 6 ÷5 6 = 26×2 1 =7 6 ×2=5 3 ×2 1 =7 1 ÷2 1 =24÷3 2 = 8 3 ×5 4 =8 5 +8 4 =5 9 ×3 2 = 11 8 ÷8=4 1 +3 1 = 5 3 ×15=2 1 +4 3 =4
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