Question

300×2+50-3×20+50=? 630+300+20-630-30+200=? (200×3+100)+30×2+100=? 700-(250+50)-400

Answer 1

Ответ:
300×2+50-3×20+50=640

630+300+20-630-30+200=490

(200×3+100)+30×2+100=1430
700-(250+50)-400=0

Answer 2

300*2+50-3*20+50=

1) 300 * 2 = 600 ;

2) 3 * 20 = 60 ;

3) 600 + 50 = 650 ;

4) 650 - 60 = 590 ;

5) 590 + 50 = 640.

Ответ : 640

Answer 3

Let's solve each of these expressions step by step:

1. $300 \times 2 + 50 - 3 \times 20 + 50$

   • First, perform the multiplications and divisions: $300 \times 2 = 600$ and $3 \times 20 = 60$.
   • Now, the expression becomes: $600 + 50 - 60 + 50$.
   • Next, perform the addition and subtraction from left to right: $600 + 50 = 650$, $650 - 60 = 590$, and $590 + 50 = 640$.
   • So, the answer is $640$.

2. $630 + 300 + 20 - 630 - 30 + 200$

   • Start by performing the additions and subtractions from left to right: $630 + 300 = 930$, $930 + 20 = 950$, $950 - 630 = 320$, $320 - 30 = 290$, and $290 + 200 = 490$.
   • So, the answer is $490$.

3. $(200 \times 3 + 100) + (30 \times 2 + 100)$

   • First, perform the multiplications and divisions: $200 \times 3 = 600$ and $30 \times 2 = 60$.
   • Now, the expression becomes: $(600 + 100) + (60 + 100)$.
   • Perform the additions within each set of parentheses: $600 + 100 = 700$ and $60 + 100 = 160$.
   • Finally, add the results together: $700 + 160 = 860$.
   • So, the answer is $860$.

4. $700 - (250 + 50) - 400$

   • Start by evaluating the expression within the innermost parentheses: $250 + 50 = 300$.
   • Now, the expression becomes: $700 - 300 - 400$.
   • Perform the remaining subtractions from left to right: $700 - 300 = 400$ and $400 - 400 = 0$.
   • So, the answer is $0$.