1. 直接写得数。
①$630÷90=$
②$239+70=$
③$210×5=$
④$850-45=$
⑤$260+68=$
⑥$810×8=$
⑦$205+85=$
⑧$720÷8=$
⑨$25×80=$
⑩$969÷3=$
⑪$633-193=$
⑫$200÷25=$
⑬$600÷15=$
⑭$163+337=$
⑮$310×8=$
⑯$282+628=$
⑰$950÷50=$
⑱$360×3=$
⑲$857-335=$
⑳$880÷11=$
㉑$355+175=$
㉒$530×3=$
㉓$320+80=$
㉔$217÷31=$
㉕$218-158=$
㉖$724÷4=$
㉗$66×50=$
㉘$300+269=$
㉙$755÷5=$
㉚$960÷30=$
㉛$756-86=$
㉜$32×80=$
㉝$430-290=$
㉞$108÷36=$
㉟$202+558=$
㊱$330÷30=$
㊲$620-410=$
㊳$125×4=$
㊴$400+289=$
㊵$450÷15=$
㉜不对,第三列:
④①$0.36+0.52=$
④②$7.9-2.43=$
④③$3.51+4.28=$
④④$9.65-5.12=$
④⑤$0.29+0.6=$
④⑥$8.3-3.07=$
④⑦$2.08+5.17=$
④⑧$6.74-1.3=$
④⑨$0.57+0.32=$
⑤⑩$5.82-2.51=$
⑤①$4.35+2.53=$
⑤②$7.28-4.82=$
⑤③$1.92+6.25=$
⑤④$9.13-6.02=$
⑤⑤$3.61+5.72=$
⑤⑥$6.59-3.81=$
⑤⑦$2.75+0.55=$
⑤⑧$11.22-5.33=$
⑤⑨$5.16+3.27=$
⑥⑩$7.05-2.6=$
①$630÷90=$
②$239+70=$
③$210×5=$
④$850-45=$
⑤$260+68=$
⑥$810×8=$
⑦$205+85=$
⑧$720÷8=$
⑨$25×80=$
⑩$969÷3=$
⑪$633-193=$
⑫$200÷25=$
⑬$600÷15=$
⑭$163+337=$
⑮$310×8=$
⑯$282+628=$
⑰$950÷50=$
⑱$360×3=$
⑲$857-335=$
⑳$880÷11=$
㉑$355+175=$
㉒$530×3=$
㉓$320+80=$
㉔$217÷31=$
㉕$218-158=$
㉖$724÷4=$
㉗$66×50=$
㉘$300+269=$
㉙$755÷5=$
㉚$960÷30=$
㉛$756-86=$
㉜$32×80=$
㉝$430-290=$
㉞$108÷36=$
㉟$202+558=$
㊱$330÷30=$
㊲$620-410=$
㊳$125×4=$
㊴$400+289=$
㊵$450÷15=$
㉜不对,第三列:
④①$0.36+0.52=$
④②$7.9-2.43=$
④③$3.51+4.28=$
④④$9.65-5.12=$
④⑤$0.29+0.6=$
④⑥$8.3-3.07=$
④⑦$2.08+5.17=$
④⑧$6.74-1.3=$
④⑨$0.57+0.32=$
⑤⑩$5.82-2.51=$
⑤①$4.35+2.53=$
⑤②$7.28-4.82=$
⑤③$1.92+6.25=$
⑤④$9.13-6.02=$
⑤⑤$3.61+5.72=$
⑤⑥$6.59-3.81=$
⑤⑦$2.75+0.55=$
⑤⑧$11.22-5.33=$
⑤⑨$5.16+3.27=$
⑥⑩$7.05-2.6=$
答案
①$630÷90=7$
②$239+70=309$
③$210×5=1050$
④$850-45=805$
⑤$260+68=328$
⑥$810×8=6480$
⑦$205+85=290$
⑧$720÷8=90$
⑨$25×80=2000$
⑩$969÷3=323$
⑪$633-193=440$
⑫$200÷25=8$
⑬$600÷15=40$
⑭$163+337=500$
⑮$310×8=2480$
⑯$282+628=910$
⑰$950÷50=19$
⑱$360×3=1080$
⑲$857-335=522$
⑳$880÷11=80$
㉑$355+175=530$
㉒$530×3=1590$
㉓$320+80=400$
㉔$217÷31=7$
㉕$218-158=60$
㉖$724÷4=181$
㉗$66×50=3300$
㉘$300+269=569$
㉙$755÷5=151$
㉚$960÷30=32$
㉛$756-86=670$
㉜$32×80=2560$
㉝$430-290=140$
㉞$108÷36=3$
㉟$202+558=760$
㊱$330÷30=11$
㊲$620-410=210$
㊳$125×4=500$
㊴$400+289=689$
㊵$450÷15=30$
㊶$0.36+0.52=0.88$
㊷$7.9-2.43=5.47$
㊸$3.51+4.28=7.79$
㊹$9.65-5.12=4.53$
㊺$0.29+0.6=0.89$
㊻$8.3-3.07=5.23$
㊼$2.08+5.17=7.25$
㊽$6.74-1.3=5.44$
㊾$0.57+0.32=0.89$
㊿$5.82-2.51=3.31$
51$4.35+2.53=6.88$
52$7.28-4.82=2.46$
53$1.92+6.25=8.17$
54$9.13-6.02=3.11$
55$3.61+5.72=9.33$
56$6.59-3.81=2.78$
57$2.75+0.55=3.3$
58$11.22-5.33=5.89$
59$5.16+3.27=8.43$
60$7.05-2.6=4.45$
②$239+70=309$
③$210×5=1050$
④$850-45=805$
⑤$260+68=328$
⑥$810×8=6480$
⑦$205+85=290$
⑧$720÷8=90$
⑨$25×80=2000$
⑩$969÷3=323$
⑪$633-193=440$
⑫$200÷25=8$
⑬$600÷15=40$
⑭$163+337=500$
⑮$310×8=2480$
⑯$282+628=910$
⑰$950÷50=19$
⑱$360×3=1080$
⑲$857-335=522$
⑳$880÷11=80$
㉑$355+175=530$
㉒$530×3=1590$
㉓$320+80=400$
㉔$217÷31=7$
㉕$218-158=60$
㉖$724÷4=181$
㉗$66×50=3300$
㉘$300+269=569$
㉙$755÷5=151$
㉚$960÷30=32$
㉛$756-86=670$
㉜$32×80=2560$
㉝$430-290=140$
㉞$108÷36=3$
㉟$202+558=760$
㊱$330÷30=11$
㊲$620-410=210$
㊳$125×4=500$
㊴$400+289=689$
㊵$450÷15=30$
㊶$0.36+0.52=0.88$
㊷$7.9-2.43=5.47$
㊸$3.51+4.28=7.79$
㊹$9.65-5.12=4.53$
㊺$0.29+0.6=0.89$
㊻$8.3-3.07=5.23$
㊼$2.08+5.17=7.25$
㊽$6.74-1.3=5.44$
㊾$0.57+0.32=0.89$
㊿$5.82-2.51=3.31$
51$4.35+2.53=6.88$
52$7.28-4.82=2.46$
53$1.92+6.25=8.17$
54$9.13-6.02=3.11$
55$3.61+5.72=9.33$
56$6.59-3.81=2.78$
57$2.75+0.55=3.3$
58$11.22-5.33=5.89$
59$5.16+3.27=8.43$
60$7.05-2.6=4.45$
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