Estimate the Sum of Decimals (Hundredths Place)

(A) Estimate to determine solutions to mathematical and real-world problems involving addition, subtraction, multiplication, or division

(Y6) Add and subtract decimals, with and without digital technologies, and use estimation and rounding to check the reasonableness of answers (ACMNA128)

5.NBT.7 Add, subtract, multiply, and divide decimals to hundredths, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.