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maths , class 7

find the value of

1) 0.75 + 23 + 0.9
2) 23.5 - 1.93
3) 2.5 x 1.5
4) 25.5 x 0.12
5) 0.345 + 8.3
6) ( 1.6 + 5.34 ) - 4.9
7) 222 - 12.9
8) 109 + 9.9
9) 10.234 x 10
10) 1000 x 0.54