Matematika

Pertanyaan

Tolong bantu
a. 40 – (– 13 ) – 6 =

b. –20 + (– 2 ) + 13 =

c. – 25 – (–10 ) –15 =

d. 12 + (–7 ) – 6 =

e. (– 12) : 3 + 8 x (– 5) =

f. 35 + 14 x 8 – 34 : 17 =

g. – 4 x ( 15 + (– 5))2 =

h. ( 3 – 1 ) : 3 =

i. 8 + 2 – 3 =
j. 55,34 + 8,75 – 2,45 =

k. 25,54 + (– 8,75 – 3,25) =

2 Jawaban

  • a) 40-(-13)-6 = 40+13-6 = 47
    b) -20+(-2)+13 = -9
    c) -25-(-10)-15 = -25+10-15 = -30
    d) 12+(-7)-6 = -1
    e) (-12÷3)+(8×(-5)) = -4 + -40 = -44
    f) 35+(14×8)-(34÷17) = 35+112-2 = 145
    g) -4×(15+(-5))2 = -4×10×2 = -80
    h) (3-1)÷3 = 2÷3 = 2/3 = 0,667
    i) 8+2-3 = 7
    j) 55,34+8,75-2,45 = 61,64
    k) 25,54 + (-8,75-3,25)=25,54 + 12 = 37,54
  • a. 47
    b. -9
    c. -30
    d.-1
    e. -20
    f. 145
    i. 7
    j. 61,64
    k.13,54

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