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第43页

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$5.2$

$0.27$

$1.1$

$20$

$0.3$

$2$

$30$

$0.16$

=19.9÷(2.5×0.4)

= $19.9$

=(15.24+4.75)-(4.72+5.28)

= $10$

=0.41×(101-1)

= $41$

=4.95×8.2

= $40.59$

$8$

$80$

$6$

$9.1$

=54.74

= $36.57$

=200

=7.6

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