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2.15*6.8竖式

2.15 × 6.8 = 14.62竖式见图:

3.8×0.15=0.574.6×50=2308.7×2.04=17.7483.2×9.8=129.360.86×0.72=0.61922.7+9.41=12.117.5-1.83=5.675-1.08=3.92

25 -15 -80 = 10 -80 = -70 26 -6 -64 = 20 -64 = -44 27 + 3 -48 = 30 -48 = -18 28 + 12 -32 = 40 -32 = 8 29 + 21 -16 = 50 -16 = 34 30 + 30 + 0 = 60 + 0 = 60 31 + 39 + 16 = 70 + 16 = 86 32 + 48 + 32 = 80 + 32 = 112 33 + 57 + 48 = 9...

(1)68.8÷4= (2)85.44÷16= (3)67.5÷15= (4)289.9÷18= (5)101.7÷9= (6)243.2÷64= (7)16.8÷28= (8)15.6÷24= (9)0.138÷15= (10)1.35÷27= (11)0.416÷32= (12)3.64÷52= (13)91.2÷3.8= (14)0.756÷0.18= (15...

180÷30= 720÷30= 360÷30= 920÷40= 780÷60= 960÷40= 432÷24= 625÷23= 837÷43= 850÷17= 780÷26= 544÷17= 898÷28= 420÷30= 780÷20= 690÷30= 750÷50= 840÷60= 520÷40= 920÷23= 864÷32= 840÷24= 704÷44= 480÷32= 672÷21= 754÷58= 897÷39= 624÷26= 576...

23.5×7.6=178.6; 15.75÷2.1=75; 8÷0.9≈8.89.

(1)7.8×0.2=15.6,改正:(2)0.039×0.8=0.312,改正:(3)6.3×8.2=516.6,改正:;(4)13.5×3.8=5.13.改正:

6.2+14.98=21.18;2.57+5.8=8.37;62.84+39.7=102.54;5.1-1.23=3.87;20-3.65=16.35;16.05-9.7=6.35;3.8×0.15=0.57;0.32×7.9=2.528;1.24×8.5=10.54;

1+1+1+1+11+1+1+1+1+1=20

800×15=12000; 1 5× 8 0 0. 1 2 0 0 0 26×804=20904; 8 0 4× 2 6 . 4 8 2 4 1 6 0 8 2 0 9 0 4274×13=3562. 2 7 4× 1 3 . 8 2 2 2 7 4 3 5 6 2

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