What is 3.6 minus 1.9?

What is 3.6 minus 1.9?

• A. 1.5
• B. 1.7
• C. 2.5
• D. 0.7

Answer: (B)

Subtracting decimals works by lining up the decimal points and handling each place value. For 3.6 minus 1.9, borrow from the ones place to fix the tenths. The 3 becomes a 2, and the tenths become 16. 16 minus 9 gives 7 tenths. Then 2 (the adjusted ones) minus 1 equals 1. So the difference is 1.7. This result comes directly from the place-value borrowing process in decimal subtraction. The other numbers would result from subtracting different amounts, but with 3.6 and 1.9, you get 1.7.

Subtracting decimals works by lining up the decimal points and handling each place value. For 3.6 minus 1.9, borrow from the ones place to fix the tenths. The 3 becomes a 2, and the tenths become 16. 16 minus 9 gives 7 tenths. Then 2 (the adjusted ones) minus 1 equals 1. So the difference is 1.7. This result comes directly from the place-value borrowing process in decimal subtraction. The other numbers would result from subtracting different amounts, but with 3.6 and 1.9, you get 1.7.