3. Tính
a) -|–5| – (-4) + |-5| – (-12)
b) |-14| – |-10| – |-7| – (-8)
c) -15 – (-4) – (+8) – |-9| – 12
d) 12 – (-7) + |-5| – (+8) -|-9|
đ) -(-17) – (+13) – |-15|-|+9|
3. Tính
a) -|–5| – (-4) + |-5| – (-12)
b) |-14| – |-10| – |-7| – (-8)
c) -15 – (-4) – (+8) – |-9| – 12
d) 12 – (-7) + |-5| – (+8) -|-9|
đ) -(-17) – (+13) – |-15|-|+9|
a) -|–5| – (-4) + |-5| – (-12)
= -5 + 4 + 5 + 12
= 16
b) |-14| – |-10| – |-7| – (-8)
= 14 – 10 – 7 +8
= 5
c) -15 – (-4) – (+8) – |-9| – 12
= -15 + 4 – 8 – 9 -12
= -40
d) 12 – (-7) + |-5| – (+8) -|-9|
= 12 + 7 + 5 – 8 – 9
= 7
đ) -(-17) – (+13) – |-15|-|+9|
= 17 – 13 – 15 -9
= -20
Đáp án:
a) -|–5| – (-4) + |-5| – (-12)
= 5 + 4 + 5 + 12
= 9 + 5 + 12
= 14 + 12
= 26
b) |-14| – |-10| – |-7| – (-8)
= 14 – 10 – 7 + 8
= 4 – 7 + 8
= -3 + 8
= 5
c) -15 – (-4) – (+8) – |-9| – 12
= -15 + 4 – 8 – 9 – 12
= -11 – 8 – 9 – 12
= -(11 + 8 + 9 + 12)
= -40
d) 12 – (-7) + |-5| – (+8) – |-9|
= 12 + 7 + 5 – 8 – 9
= 19 + 5 – 8 – 9
= 24 – 8 – 9
= 16 – 9
= 7
e) -(-17) – (+13) – |-15| – |+9|
= 17 – 13 – 15 – 9
= 4 – 15 – 9
= -11 – 9
= -20
Chúc học tốt!!!