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The first question on page 35 of the second volume of the fourth grade oral calculation card
4200÷30= 14

6× 1300= 7800

1300×50=65000

200×48= 9600

930-660= 270

530+280= 8 10

9200÷400= 23

840÷2 1= 40

180×500= 900000

8000÷500 = 16

1900÷20= 95

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