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Urgent! Beijing normal university printing plate elementary school mathematics fourth grade second volume oral calculation problem.
2 10÷3= 40÷5= 160÷40= 350÷70=

13×3= 12×6= 23×4= 720÷90=

24×3= 13×5= 24÷2= 96÷6=

78÷2= 78÷3= 48÷4= 48÷3=

28×2= 3×26= 16×4= 48×2=

3× 19= 12×5= 27×3= 4×24=

24-8= 67-59= 45-28= 54- 17=

12×3= 15×6= 14×4= 37×2=

36÷3= 90÷6= 56÷4= 74÷2=

130-50= 53-26= 100-37= 95-57=

36÷ 12= 90÷ 15= 56÷ 14= 74÷37=

15×5= 48÷ 16= 76÷2= 90÷45=

12×7= 5× 14= 64÷4= 6× 16=

9 1÷7= 84÷6= 60÷ 12= 96÷24=

320÷40= 450÷90= 560÷70= 14×7=

770-70= 5 1+49= 83- 18= 890-35=

4×24= 32÷2= 96÷8= 85÷5=

64÷ 16= 70÷35= 25×4= 6× 15=

48+52= 70÷ 14= 5× 14= 12×30=

73+27= 40×20= 80÷20= 14+86=

480÷80= 600+40= 150÷50= 630÷70=

36÷2= 550÷5= 15×6= 300÷60=

16×3= 70÷5= 2×45= 13×4=

54+87+ 13= 39+ 144+6 1= 567+299= 327- 198=

27×4×5= 18×35= 32×25= 15×28×2=

1.89÷ 100= 0.82+0.08= 73× 1=

0.63× 10= 4÷ 10= 17÷ 1000=

2.0.56+0.4= 1.25× 100= 5.6+99=

100÷25= 1-0.93= 90-0.9=