What expression use equal up to one hundredth of 75? Is it 75÷2.5 or 0.3×2.5 or 7.5÷2.5 or 30×2.5? Which expression is equal up
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1. Note that the number 1.8 consists of two parts 1 and 0.8.
2. The decimal 0.8 can be written as the fraction
3. Add these two numbers:
4. Since 18=2·3·3 and 10=2·5, the fraction can be simplified to the rational number