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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: trên 1 1.Tính hợp lý nếu có thểa. 75.14 + 75.86b. 163.2021–2021.63c. 153.43+ 43–54.43d. Viết gọn(alà sốtựnhiên)i/ x+ 2x+ x.6ii/ y –3y +

Toán Lớp 6: trên 1
1.Tính hợp lý nếu có thểa. 75.14 + 75.86b. 163.2021–2021.63c. 153.43+ 43–54.43d. Viết gọn(alà sốtựnhiên)i/ x+ 2x+ x.6ii/ y –3y + 8y

Comments ( 2 )

  1. #laviken#
    a)75\times14 + 75\times86
    =75\times(14+86)
    =75\times100
    =7500
    b)163\times2021-2021\times63
    =2021\times(163-63)
    =2021\times100
    =202100
    c)153\times43+43-54\times43
    =43\times(153+1-54)
    =43\times100
    =4300
    d)x+2x+x6
    =x\times(1+2+6)
    =x\times9
    =9x
    i)y-3y+8y
    =y\times(1-3+8)
    =y\times6
    =6y
     

  2. a,75.14 + 75.86 = 75(14+86)= 75.100= 7500
    b, 163.2021 – 2021.63= 2021.(163-63)=2021.100=202100
    c, 153 .43 + 43 -54.43=43(153 +1 -54)=43.100=4300
    d, x+2x+x6= 9x
    i, y-3y + 8y=6y

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222-9+11+12:2*14+14 = ? ( )