36+78 427+356 542+286 169+534 954+259 800-424 567-348 405-183

Вычислим значения выражений:

1) 36 + 78 = 30 + 6 + 70 + 8 = 100 + 14 = 114; 

2) 427 + 356 = 400 + 20 + 7 + 300 + 50 + 6 = 700 + 70 + 13 = 770 + 13 = 783; 

3) 542 + 286 = 500 + 40 + 2 + 200 + 80 + 6 = 700 + 120 + 8 = 820 + 8 = 828; 

4) 169 + 534 = 100 + 60 + 9 + 500 + 30 + 4 = 600 + 90 + 13 = 690 + 13 = 703; 

5) 954 + 259 = 900 + 50 + 4 + 200 + 50 + 9 = 1100 + 100 + 13 = 1200 + 13 = 1213; 

6) 800 - 424 = 800 - 400 - 20 - 4 = 400 - 20 - 4 = 380 - 4 = 376; 

7) 567 - 348 = 500 + 60 + 7 - 300 - 40 - 8 = 200 + 20 - 1 = 200 + 19 = 219; 

8) 405 - 183 = 400 + 5 - 100 - 80 - 3 = 300 - 80 + 2 = 220 + 2 = 222.