Mathematics
语言:
中文
Language:English
==equ==
Unary equation
Multivariate equation
==cal==
Solution inequality
Mathematical calculation
Fractional calculation
Mathematical statistics
Resolving prime factor
Fraction and Decimal Interactions
Lenders ToolBox
==LiAl==
Determinant
Matrix multiplication
Inverse matrix
==der==
Derivative function
==img==
Function image
==que==
Q&A
current location:Mathematical operation > History of Mathematical Computation
140-100= 560-130= 120-120= 120-100= 360-100= 360-140= 630-120= 900-170= 240+300= 700+320= 440-240= 570-300=
550+370= 720-400= 190-120= 800-420= 440-220= 300+620= 800-520= 400+320= 500+920=
900-520= 780-360= 840-520= 600+370= 380-160= 660+320= 700+320= 440-240= 570-300=
180+180= 460+420= 200+520=
600+370= 880-460= 560+300= 790+130= 740-540= 470-120= 600+230= 550-420= 480-390= 180+180= 460+420= 200+520=
250+470= 520-120= 880-210= 620+220= 360+310= 440+540= 880-750= 780-460= 640-320=
910-420= 480-360= 540-400= 610+170= 280-160= 660+100= 270+820= 440-140= 570-320=
500+300= 640-260= 370-320=
350+390= 520-420= 390-100= 600-400= 640-200= 100+600= 600-500= 200+300= 300+900=
700-500= 580-380= 640-500= 400+390= 180-180= 460+340= 500+300= 640-260= 370-320=
380+160= 260+400= 400+500=
600+390= 880-480= 560+320= 590+110= 540-460= 270-100= 400+210= 750-440= 680-410= 380+160= 260+400= 400+500=
150+490= 320-100= 680-230= 420+200= 160+330= 240+560= 680-670= 780-480= 640-340=
710-400= 820-380= 340-240= 410+190= 480-180= 460+120= 470+800= 240-160= 370-300=
710-400= 280-380= 340-420= 410+190= 480-180= 460+120= 470+800= 240-160= 370-300=
700+200= 440-160= 570-220=
100-20= 100-50= 120-40= 120-20= 360-20= 360-60= 361-40= 362-90= 240+20= 700+200= 440-160= 570-220=
550+290= 720-320= 190-200= 800-300= 440-100= 300+500= 800-400= 400+200= 500+800=
900-400= 780-280= 840-400= 600+290= 380-80= 660+240= 700+200= 440-160= 570-220=
180+60= 460+300= 200+400=
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