Question

Реши первые примеры. Используя их ответы, быстро найди ответы в следующих примерах. (650+40)-390 (660+40)-390 (670+40)-390 560-(100+60) 560-(100+40) 560-(100+20) (810+90)-100 (810+60)-100 (810+30)-100

Answer 1

300 310 320 400 420 440 800 770 740

Answer 2

Calculation of the Examples

Let's solve the given examples step by step:

1. (650 + 40) - 390 2. (660 + 40) - 390 3. (670 + 40) - 390 4. 560 - (100 + 60) 5. 560 - (100 + 40) 6. 560 - (100 + 20) 7. (810 + 90) - 100 8. (810 + 60) - 100 9. (810 + 30) - 100

Solution:

1. (650 + 40) - 390 = 700 2. (660 + 40) - 390 = 710 3. (670 + 40) - 390 = 720 4. 560 - (100 + 60) = 400 5. 560 - (100 + 40) = 420 6. 560 - (100 + 20) = 440 7. (810 + 90) - 100 = 800 8. (810 + 60) - 100 = 770 9. (810 + 30) - 100 = 740

Using the answers from the first set of examples, we can quickly find the answers for the second set of examples:

1. 700 + 560 = 1260 2. 710 + 560 = 1270 3. 720 + 560 = 1280 4. 400 + 560 = 960 5. 420 + 560 = 980 6. 440 + 560 = 1000 7. 800 + 560 = 1360 8. 770 + 560 = 1330 9. 740 + 560 = 1300

Therefore, the answers for the second set of examples are:

1. 1260 2. 1270 3. 1280 4. 960 5. 980 6. 1000 7. 1360 8. 1330 9. 1300

Please let me know if you have any further questions!