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

Toán Lớp 6: Bỏ ngoặc rồi tính 1) -7264 + (1543 + 7264) 2) (144 – 97) – 144 3) (-145) – (18 – 145) 4) 111 + (-11 + 27) 5) (27 + 514) – (486 – 73

Tháng Một 19, 2023 Toán học 1 Comment 0 views

Toán Lớp 6: Bỏ ngoặc rồi tính
1) -7264 + (1543 + 7264)
2) (144 – 97) – 144
3) (-145) – (18 – 145)
4) 111 + (-11 + 27)
5) (27 + 514) – (486 – 73)
6) (36 + 79) + (145 – 79 – 36)
7) 10 – [12 – (- 9 – 1)]
8) (38 – 29 + 43) – (43 + 38)
9) 271 – [(-43) + 271 – (-17)]
10) -144 – [29 – (+144) – (+14

Comments ( 1 )

  1. truongthanhhung
    truongthanhhung
    19 Tháng Một, 2023 at 3:13 sáng
    Reply
    Lời giải chi tiết:
    1) -7264+(1543+7264)
    =-7264+1543+7264
    =(-7264+7264)+1543
    =0+1543
    =1543
    2) (144-97)-144
    =144-97-144
    =(144-144)-97
    =0-97
    =-97
    3) (-145)-(18-145)
    =-145-18+145
    =(-145+145)+18
    =0+18
    =18
    4) 111+(-11+27)
    =111-11+27
    =(111-11)+27
    =100+27
    =127
    5) (27+514)-(486-73)
    =27+514-486+73
    =(27+73)+(514-486)
    =100+28
    =128
    6) (36+79)+(145-79-36)
    =36+79+145-79-36
    =(36-36)+(79-79)+145
    =0+0+145
    =145
    7) 10-[12-(-9-1)]
    =10-[12-(-10)]
    =10-(12+10)
    =10-12-10
    =(10-10)-12
    =0-12
    =-12
    8) (38-29+43)-(43+38)
    =38-29+43-43-38
    =(38-38)+(43-43)-29
    =0+0-29
    =-29
    9) 271-[(-43)+271-(-17)]
    =271-(271+17-43)
    =271-271-17+43
    =(271-271)+(43-17)
    =0+26
    =26
    10) -144-[29-(+144)-(+14)]
    =-144-(29-144-14)
    =-144-29+144+14
    =(-144+144)-(29-14)
    =0-15
    =-15
                                                    
    @uniquetimehunter
                                                    

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

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