Question

Выполните умножение:
1) 0.13×10
2.15×100
0.926×1000

2)8.07×10
4.06×100
3.071×1000

3) 13.2×0.1
24.5×0.01
391.6×0.001
ТЕМА : УМНОЖЕНИЕ ДЕСЯТИЧНОЙ ДРОБИ НА 10,100,1000,.. И НА 0.1;0.01;0.001
Сделайте столиком, ❤️☁️​

Answer 1

$0,13 \cdot 10 = \frac{13}{100} \cdot 10 = \frac{13}{10} = 1,3$

$2,15 \cdot 100 = \frac{215}{100} \cdot 100 = 215$

$0,926 \cdot 1000 = \frac{926}{1000} \cdot 1000 = 926$

$8,07 \cdot 10 = \frac{807}{100} \cdot 10 = \frac{807}{10} = 80,7$

$4,06 \cdot 100 = \frac{406}{100} \cdot 100 = 406$

$3,071\cdot1000=\frac{3071}{1000} \cdot 1000 = 3071$

$13,2 \cdot 0,1 = \frac{132}{10} \cdot \frac{1}{10} = \frac{132}{10\cdot10} = \frac{132}{100} = 1,32$

$24,5 \cdot 0,01 = \frac{245}{10} \cdot \frac{1}{100} = \frac{245}{10\cdot100} = \frac{245}{1000} = 0,245$

$391,6\cdot0,001 = \frac{3916}{10} \cdot \frac{1}{1000} = \frac{3916}{10\cdot1000} = \frac{3916}{10000} = 0,3916$