Вправи: 61

61. Знайди значення виразів.

23 • 11 = 23 • 10 + 23 = 230 + 23 = 253;

6 • 101 = 6 • 100 + 6 • 1 = 600 + 6 = 606;

64 • 125 = 64 • 1000 : 8 = 64000 : 8 = 8000;

77 • 99 = 77 • 100 – 77 = 770 – 77 = 693;

300 : 25 = 3 • 100 : 25 = 3 • 4 = 12;

8 • 250 = 2 • 4 • 250 = 2 • 1000 = 2000;

23 • 9 = 23 • 10 – 23 = 230 – 23 = 207;

5000 : 125 = 5000 : 1000 • 8 = 5 • 8 = 40;

7 • 101 = 7 • 100 + 7 = 700 + 7 = 707;

14 • 99 = 14 • 100 – 14 = 1400 – 14 = 1386;

8000 : 250 = 8000 : 1000 • 4 = 8 • 4 = 24;

200 : 25 = 200 : 100 • 4 = 2 • 4 = 8.