雾凇岛-法制教育讲稿

2020年9月19日发(作者：钟发宗)

口算：
200+180= 56+125= 400-70= 71+28= 35÷5=
90+150= 6×8= 36-18= 910-90= 35÷7=
220+150= 6×9= 72÷9= 45-27= 720-180=
9×9= 290-40= 770-160= 6×7= 40÷8=
600+270= 620+150= 3×7= 7×7= 70×20=
37÷6=
430+27=
33-17=
250-60=
15+43=
840+90=
34+23=
67-53=
680-120=
83÷9=
41÷5=
毫米=（）
180÷2=
178÷6≈
270÷9=
竖式计算：
12×4=

56÷9= 760+100= 750+125= 200+50=
4×6= 19÷8= 720-70= 820-120=
71-43= 81÷9= 72÷8= 71-24=
66÷8= 5×5= 28÷7= 33÷6=
58-36= 6×6= 60+350= 360÷6=
5×9= 43÷7= 460-72= 13÷6= 9×4=
34+56= 30+540= 620-57= 11÷5=
220+170= 4×7= 19÷6= 21÷6= 69+32=
770+630= 3×3= 52+81= 9×9=
330-172= 8×6= 62+52= 38+52= 5×6=
75+75= 70+18= 5×4= 5000米=（）千米 300
厘米 720÷8= 9÷3= 90÷3= 900÷3=
4000÷5= 78÷4≈ 83÷9≈ 470÷8≈
83÷9≈ 300÷5= 200÷5= 27÷9=
300÷6=
32×3= 54×2= 234×6= 754×3=

138×9= 765×7= 681×8= 313×5= 258×9=



373×6= 126×8= 604×5= 109×7= 406×6=



602-394=



426÷4=



370÷7=



900-807=



46×22=
23×37=
784-685=
915÷3=
606-208=
46×58=
76×15＝
560÷4=
603÷7=
326×5=
486÷2=
458+542=
198+303=
482÷8=
607÷5=
423÷3=

87×19= 362÷6= 525÷3＝ 254÷5＝ 32X26=



192÷4＝ 602÷7＝ 839÷9＝ 726÷6＝ 51×16 ＝



78×22＝ 416÷4＝ 823÷8＝ 63×43= 367÷4=



795÷5= 42×53= 15×82= 79×97= 28×32＝



54×25 ＝ 48×61＝ 39×42 ＝ 168÷8= 370÷5=



900-807=250+308＝415×9＝ 41÷7= 756-297=

567+284= 534×4=86÷6= 500—117= 835+696=



248×4＝ 56÷4= 602-394= 157+563= 262×7=



54÷9= 784-685= 704+286= 106×5＝65÷5=



2200—586= 38+983= 142×3= 44÷6= 980—107=



930＋4079＝ 525×4=29÷3＝ 809—451= 980+107=



117×5＝ 900－247= 276+ 654=519×7=63÷7=

842–758 = 764 + 615 = 128×9= 459 + 864 = 35×9=



脱式计算
81÷9＋877 66×5+774 921+7×4 80×6×2
= = = =
= = = =
770÷7+65 807＋20÷2 100－50÷5 35－35÷7
= = = =
= = = =
302＋30×2 600×8÷3 40＋100÷5 434＋25×5
= = = =
= = = =
60－12×3 64÷8＋456 640＋60×4 15×7－8
= = = =
= = = =
42÷7＋36 37×4＋19 10×4－20 45÷3＋268
= = = =
= = = =
25÷5＋242 35÷5＋56 72÷9－621×4－56
= = = =
= = = =

500×(400－396) 72÷9－5 564+264-453 7650-(546+4530)
= = = =
= = = =
65×9-450 9×80+980 9000-(4500+250) 6700+72÷8
= = = =
= = = =
14×6+45
=
=
8×(910-720)
=
=
9450-3200-4200
=
=
4000 ÷ 8 + 350
=
=
2800+32× 6
=
=
999÷ 9 ×8
=
=
900÷(71-68)
=
=
760-540+1110
=
=
2400÷6－45
=
=
320÷8＋64
=
=
300÷6×9
=
=
280× 4 ÷5
=
=
180÷9-7
=
=
6500+1250-350
=
=
800× 7－180
=
=
270 ÷ 3 ×9
=
=
(6900-2400)÷ 5
=
=
60×8+1570
=
=
6＋45×3
=
=
80×30+5600
=
=
1600÷2＋230
=
=
630 ÷ 9 + 320
=
=
（72÷9）X8
=
=
60×(23-17)
=
=

960÷4×9 350÷5×9 450÷5+1250 (6900-2400)÷5
= = = =
= = = =
75÷15＋125 3090＋6×6 (387－87)X4 160－160÷80
= = = =
= = = =
750＋550÷5 (111＋189)×3 125×8÷100
= = =
= = =
187＋299－299 587＋496－674 2660＋26÷26
= = =
= = =
32÷(32÷2) 300－(300－222) 65＋20×5
= = =
= = =
687＋（99－67）568＋（1000－94） 3560＋20×90
= = =
= = =
960÷4×9 350÷5×9 450÷5+1250
= = =
= = =
3090＋6×6 (387－383)X450 750＋550÷5
= = =
= = =
6×250×0
=
=
156÷6+657
=
=
3390－10×95
=
=
687＋999÷3
=
=
(6900-2400)÷5
=
=
(111＋189)×3
=
=

125×8÷100 6×250×0 810×4÷6 33÷3×29
= = = =
= = = =
187＋299－299 587＋496－674 2660＋26÷26 153X6+657
= = = =
= = = =
32X(32+16)
=
=

300－(300－222)
=
=
3390－10×95
=
=
687＋（
=
=
99－67）

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