Toán Lớp 6: I- Perform the indicated operations: −2+4= −3+9 −7+10= −6+1= −5+8 = −9+7= −20+11= −12+18= 3+5–4= 2+1–6= 5−8–1= 7−10+1= 8+3–15= 5−6–

Toán Lớp 6: I- Perform the indicated operations:
−2+4= −3+9 −7+10=
−6+1= −5+8 = −9+7=
−20+11= −12+18= 3+5–4=
2+1–6= 5−8–1= 7−10+1=
8+3–15= 5−6–4= 1−7–4=
−3+6+1= −8+2+3= −10+4–6=
−9−3–1= −2−7+4= −20+11–6=
−5+14–8= −13−4+6= −30−80+40=
1+(−7)= 3 + (−10) = −2 + (−1) =
−1 + (−6) = −5 + (−5) = −4 + (−5) =
−10 + (−11) = −8 + (−4) = 1–(−2)=
3–(−1)= 3–(−5)= 6–(−4)=
9–(−2)= −1 – (−4) = −2 – (−1) =
−8 – (−3) = −5 – (−9) = −6–(−7)=
−15 – (−8) = −12 – (−30) = −11×3=
4×−15= −12 × −12 = −5×7=
9×−8= −7×−8= 12×−6=
4×−13 −11×10= −20×−6=
14×7 = −18 × −13 = 2×3×−2=
−3×2×5= −5×−6×2= 10×−3×−4=
−9×2×−2= −4×−3×−5= −8×−8×−2=
5×−4×−7= −10÷2= −12÷3=
−24÷4= −42÷6= 9÷−3=
21÷−7= −44 ÷ 11= −72÷9=

−10 ÷ (-5)= −28÷ 4= −30÷ −3=
−48 ÷ −8 −6 ÷ 6= 24÷ −3=
15 + 27 = __________ 27 + 15 = __________
27 + 0 = __________ 0 + 15 = __________
7 + __________ = 0 (-9) + __________ = 0
17 + (-17) = __________ (-7) + __________ = -5
(-9) – __________ = 15 (-17) – __________ = -4
(-9) – __________ = 3 -15 – 27 = )+__________
15 – 27 = __________ -15 – 0 = __________
0 – 27 = __________ 0 – (-27) = __________
(-8) – __________ = -3 __________ – (-5) = +13