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

Toán Lớp 6: 35+<-7>.9+201-135+63 <-87>+126+187+74 –<-171+89+223>–<71-105-111>+223

Home/ Toán Lớp 6: 35+<-7>.9+201-135+63 <-87>+126+187+74 –<-171+89+223>–<71-105-111>+223

Toán Lớp 6: 35+<-7>.9+201-135+63 <-87>+126+187+74 –<-171+89+223>–<71-105-111>+223

Tháng Mười 27, 2022 Toán học 1 Comment 0 views

Toán Lớp 6: 35+<-7>.9+201-135+63
<-87>+126+187+74
–<-171+89+223>–<71-105-111>+223

Comments ( 1 )

  1. minhhaanh
    minhhaanh
    27 Tháng Mười, 2022 at 3:37 chiều
    Reply
    35 + (-7) . 9 + 201 – 135 + 63
    = 35 + (-63) + 201 – 135 + 63
    = (-63 + 63) + (-135 + 35) + 201
    = 0 + (-100) + 201
    = (-100) + 201
    = 101
    ____________________________________
    (-87) + 126 + 187 + 74
    = (126 + 74) + (187 – 87)
    = 200 + 100
    = 300
    ____________________________________
    -(-171 + 89 + 223) – (71 – 105 – 111) + 223
    = -141 – (-145) + 223
    = -141 + 145 + 223
    = 4 + 223
    = 227
    _______________________________________
    Cách 2 :
    -(-171 + 89 + 223) – (71 – 105 – 111) + 223
    = 171 – 89 – 223 – 71 + 105 + 111 + 223
    = (171 – 71) + (223 – 223) + (-89 + 111) + 105
    = 100 + 0 + 22 + 105
    = 100 + 22 + 105
    = 227

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

Thanh Hùng

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