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Jiangsu education printing plate fourth grade first volume mathematics oral calculation problem plus answer.
90÷30=3 640÷20=32 92-58=34 26+54=80 1400×5=7000

420÷70=6 60÷20=3 68÷4= 17 450÷50=9

370÷ 10=37 640÷80=8 15×5=75 23×3=69

12× 10= 120 480÷80=6 16×5=80 27×3= 8 1

90÷ 15= 6 48÷4= 12 630÷70=9 12×8=96

60÷30= 2 24×20=480 32×3=96 30÷ 6= 5

480÷80=6 600+40=200 150÷50=3 630÷70=9

50÷5= 10 15×6=90 300÷60=5 16×3= 48

70÷5= 14 36÷2= 18 2×45=90 13×4= 52

87+ 13= 100 39+6 1= 100 567+299= 866 15×2= 30

327- 198= 127 4×5=20 18×35=630 32×25= 800

4500÷900=5 70+90= 160 4800÷40= 12 14×20 1=28 14

80÷ 16=5 420÷20= 2 1 2500÷50=50 16×5= 80

32×20= 640 67×4=268 40×9=360 240÷40=6

360÷60=6 87÷3=29 25×4= 100 696÷3= 232

125×8= 1000 8×25=200 80÷20=4 4×50=200

20×2= 40 300×6= 1800 120×3 = 360 420×20 =8400

16×70= 1 120 150×20= 3000 60÷30= 2 80÷20=4

240÷40 =6 2 10÷70=3 400÷50=8 1000÷ 100= 10

25×40= 1000 125×8= 1000 300×330=99000 3× 1400=4200 80÷40=2

600÷30=20 400÷80=5 140×300=4200 8800÷40=220

9600÷800= 12 750-290=460 5×490=2450 760×20= 15200

750÷50= 15 37×200=7400 660÷20=33 8600-4200= 4400

2 10÷3=70 40÷5= 8 160÷40= 4 350÷70=5

You should do this first. I just finished the calculation. Mistakes are inevitable. Please forgive me.