Evaluate the following without a calculator and express in scientific notation: 1. 0.0025×107−1.07×105 2. 9×106+2.4×107 3. (0.0034)(2.5×10−7) 4. 1.44×10−8÷0.000024
Evaluate these expressions without a calculator and express answers in scientific notation: 1. 0.0025×107−1.07×105 2. 9×106+2.4×107 3. (0.0034)(2.5×10−7) 4. 1.44×10−8÷0.000024
1. Calculate 143−54. What is the result? 2. Find the product of 53 and 65 in simplest form. 3. Convert 0.35 to a fraction in lowest terms. 4. Express 0.35 as a percentage. 5. Identify the equivalent of 2.3%.