240×40=2400×4. .

240×40=2400×4.______.240×40
=(240×10)×(40÷10),
=2400×4.
故答案为:正确....

35×5.6=35×56÷ .

0.35×5.6=35×56÷______.0.35×5.6,
=(0.35×100)÷100×(5.6×10)÷10,
=35×56÷(100×10),
=35×56÷1000.
故答案为:1000....

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