Use the equation 135•42=5,670 and what you know about fractions, decimals, and place value to explain how to place the decimal point when you compute (1.35)•(4.2).
Accepted Solution
A:
Answer:5.67Step-by-step explanation:Let's examine both factors...1.35 comes from 135, it's 100 times smaller, so this factor would force me to move the decimal point by 2 positions to the left.4.2 comes from 42, it's 10 times smaller, so this factor would force me to move the decimal point by 1 position to the left.In total, the decimal point would have to be moved by 3 positions, to the left... so 5,670 would become 5.67Which is easily verifiable just by looking at the end equation, even without calculating it:1.35 * 4.2 would give something around 5... not around 50 nor 500.