1. 2×30+(-18) =
2. 70:7+56:7=
3. (-11+5+14)×4=
4. 4×7-4×(-7)=
5. -150:(4×2-10)=
6. -2×3+200:2=
7. 6+11×9-6×7=
8. (-6) ×6×5):(-2)=![]()
2. 70:7+56:7=
3. (-11+5+14)×4=
4. 4×7-4×(-7)=
5. -150:(4×2-10)=
6. -2×3+200:2=
7. 6+11×9-6×7=
8. (-6) ×6×5):(-2)=
[tex]1. \: 2 \times 30 + ( - 18 ) \\ = \: 60 + ( - 18) \\ = 42[/tex]
[tex]2. \: 70 \div 7 + 56 \div 7 \\ = \: 10 + 8 \\ = 18[/tex]
[tex]3. \: ( - 11 + 5 + 14) \times 4 \\ = \: 8 \times 4 \\ = 32[/tex]
[tex]4. \: 4 \times 7 - 4 \times ( - 7) \\ = 28 - ( - 28) \\ = 28 + 2 8 \\ = 56[/tex]
[tex]5. \: - 150 \div (4 \times 2 - 10) \\ = - 150 \div (8 - 10) \\ = - 150 \div ( - 2) \\ = 75[/tex]
[tex]6. \: - 2 \times 3 + 200 \div 2 \\ = - 6 + 100 \\ = 94[/tex]
[tex]7. \: 6 + 11 \times 9 - 6 \times 7 \\ = 6 + 99 - 42 \\ = 63[/tex]
[tex]8. \: ( - 6 ) \times 6 \times 5) \div ( - 2 ) \\ = ( - 36 \times 5 ) \div ( - 2 ) \\ = - 180 \div (- 2 ) \\ = 90[/tex]
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