решение в столбик 461 и 463​

9/25×4=36/100=0,36

21/6=3 3/6=3 1/2×5=3 5/10=3,5

41/4×25=1025/100= 10,25

93/2×5=465/10=46,5

45/12=3 9/12=3 3/4×25=3,75

2)

27/5-9/2=54/10-45/10=5,4-4,5=0,9

2/25+11/4=0,08+2,75=2,83

27/6-21/14=4 3/6-1 7/14=4 1/2-1 1/2=4,5-1,5=3

2/5×9/4=0,4×2,25=0,9

36/5÷3/2=36/5×2/3=12/5×2=2,4×2=4,8

3)

21/4+9/5=5,25+1,8=7,05

12/25-13/4=0,48-3,25=-2,77

15/6-33/22=2 3/6-1 11/22=2 1/2-1 1/2=2,5-1,5=1

8/25×7/5=0,32×1,4=0,448

6/15÷2/10=6/15×10/2=2/5×10/2=0,4×5=2