人教版三年级上册口算(9页)Good is good, but better carries it
精益求精,善益求善
新课改教育网口算训练 187-17= 7×5=4200-200=2÷1=20÷5= 67+19= 54÷6=5600+300=80-37= 16÷4= 13+0= 9×6=80-27=900+200= 72÷8=8×8= 26+44= 8000-6000=9×7=21+45= 6×6=48÷8=87-35= 2×9=口算训练 220÷4= 796+154≈ 834-246≈ 8+42=20÷4=56+12= 400-70= 71+28= 35÷5= 90+150= 365-188=77÷1=2000+60= 511+309≈ 888-879≈ 5×6= 200+180=42÷7= 4000+100= 12÷4-2=22+60= 46-18= 4×4×2=口算训练 384+16=8×8=5+20÷5= 42-5=300+1700=10 + 39= 65 + 25 = 47-3×2= 4000-900=60+72÷8=82 - 56 = 75 + 27=60+300=18÷2=94 - 66 = 7+44=30÷6×3=45-39=980-600=16÷(50-42)=35 -17 +22 =68 - 35 = 2400-900=1+4×4=口算训练 41500-700=792+116≈383-266≈65+6= 360÷6= 656+323≈ 987-435≈505 +111 = 4×9= 36÷6=38 + 18 =24-6×3=200+800=8÷2=64-8=4×4=420+80=74 + 22 =2000+800=28÷4=58+36=900+3000=34 + 17 =5800-800=口算训练 567 + 21 =4×8-5=9×( )= 725