Предмет: Математика, автор: Аноним

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Автор ответа: Iryn95
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Пошаговое объяснение:

Правила деления чисел на 10 ,100,1000 и т.д. :  нужно запятую сдвинуть влево на столько позиций, сколько нулей у делителя.

1) 7,8 мм в см

1 см = 10 мм

7,8 мм = 7,8 : 10= 0,78 см

2) 29 кг в т

1 т = 1000 кг

29 кг = 29 : 1000 = 0,029 т

3) 1,5 мм²  в см²

1 см² = 100 мм²

1,5 мм²  = 1,5 : 100 = 0,015 см²

4) 43,6 см в м

1 м = 100 см

43,6 : 100 = 0,436 м

5) 17,5 ц в т

1 т = 10 ц

17,5 ц = 17,5 : 10 = 1,75 т

6) 140 см² в м²

1м² = 10 000 см²

140 см² = 140 : 10 000 = 0,014 м²

7) 15 м в км

1 км = 1000 м

15 м = 15 : 1000 = 0,015 м

8) 8,4 кг в ц

1 ц = 100 кг

8,4 кг : 100 = 0,084 ц

9) 56,1 а в га

1 га = 100 а

56,1 а = 56,1 : 100 = 0,561 га

10) 1920 дм в км

1 км = 10 000 дм

1920 дм = 1920 : 10000 =0,192 км

11) 250 г в кг

1 кг = 1000 г

250 : 1000=0,25 кг

12) 60 000 м² в км²

1 км² = 1 000 000 м²

60 000 м² = 60 000  : 1 000 000 = 0,06 км²

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