The document provides a series of multiplication and division problems involving multiplying and dividing numbers by powers of ten, 100, 1000, 0.1, 0.01, and 0.001. It also includes addition, subtraction, multiplication and division problems to solve.

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Resolve, relembrando as regras de multiplicar por 10,100,100 e 0,1, 0,01, 0,001.
12x10= 53,293x10= 812x0,1= 283,1x0,001=
2,345x100= 9,3x10= 3x0,1= 92,3x0,1=
38,3x100= 823,1x100= 987,6X0,01= 23x0,1=
45,1X1000= 2,87x10= 12345X0,1= 7x0,001=
0,12x10= 48x100= 23,9x0,1= 923x0,01=
45x1000= 129x100= 89x0,001= 22,1x0,1=
9,786x1000= 38x10= 78,4x0,1= 672,1x0,01=
34,6x100= 2,3465x1000= 1928x0,01= 9x0,01=
Resolve as operações.
2, 1 2 4 + 2 3 + 0, 6 5 7 = 9 1 3 4, 2 - 8 4 8, 9 =
3 7 4 5, 9 + 2, 2 + 6 7 = 4 5 6, 2 - 1 8, 4 =
3, 2 7 x 3, 7 = 4 6 8 x 8, 2 =
2 8 9 4 8 : 7 = 9 4 5 8 : 3 =