Let's evaluate the expressions step by step.
Expression: 15×10+(30−20)×5 15 \times 10 + (30 - 20) \times 5 15×10+(30−20)×5
Result: 200 200 200
Expression: (120+320÷4)×2 (120 + 320 \div 4) \times 2 (120+320÷4)×2
Result: 400 400 400
Expression: 15×10+30−20×5 15 \times 10 + 30 - 20 \times 5 15×10+30−20×5
Result: 80 80 80
Expression: (120+320)÷(4×2) (120 + 320) \div (4 \times 2) (120+320)÷(4×2)
Result: 55 55 55
To summarize, the results are:
Let's evaluate the expressions step by step.
Expression: 15×10+(30−20)×5 15 \times 10 + (30 - 20) \times 5 15×10+(30−20)×5
Calculate 15×10=150 15 \times 10 = 150 15×10=150Calculate 30−20=10 30 - 20 = 10 30−20=10Calculate 10×5=50 10 \times 5 = 50 10×5=50Now add: 150+50=200 150 + 50 = 200 150+50=200Result: 200 200 200
Expression: (120+320÷4)×2 (120 + 320 \div 4) \times 2 (120+320÷4)×2
First, calculate 320÷4=80 320 \div 4 = 80 320÷4=80Now calculate 120+80=200 120 + 80 = 200 120+80=200Finally, calculate 200×2=400 200 \times 2 = 400 200×2=400Result: 400 400 400
Expression: 15×10+30−20×5 15 \times 10 + 30 - 20 \times 5 15×10+30−20×5
Calculate 15×10=150 15 \times 10 = 150 15×10=150Calculate 20×5=100 20 \times 5 = 100 20×5=100Now calculate 150+30−100 150 + 30 - 100 150+30−100First, 150+30=180 150 + 30 = 180 150+30=180Then, 180−100=80 180 - 100 = 80 180−100=80Result: 80 80 80
Expression: (120+320)÷(4×2) (120 + 320) \div (4 \times 2) (120+320)÷(4×2)
Calculate 120+320=440 120 + 320 = 440 120+320=440Calculate 4×2=8 4 \times 2 = 8 4×2=8Now, 440÷8=55 440 \div 8 = 55 440÷8=55Result: 55 55 55
To summarize, the results are:
15×10+(30−20)×5=200 15 \times 10 + (30 - 20) \times 5 = 200 15×10+(30−20)×5=200(120+320÷4)×2=400 (120 + 320 \div 4) \times 2 = 400 (120+320÷4)×2=40015×10+30−20×5=80 15 \times 10 + 30 - 20 \times 5 = 80 15×10+30−20×5=80(120+320)÷(4×2)=55 (120 + 320) \div (4 \times 2) = 55 (120+320)÷(4×2)=55