This estimation packet includes many different ways to teach estimating 2-digit sums and differences.
Inside you'll find -
Page 3: Estimation Key Words Poster
Page 4: How to Estimate – Estimation steps for student notebooks
Pages 5-12: Estimation Detectives booklet with answer key on page 12
Pages 13-15: Worksheets for practicing double digit addition and subtraction
Pages 16-18: Worksheets for practicing stacking and adding/subtracting 2-digit numbers
Pages 19-30: Worksheets and half sheets for practicing estimating sums and differences
Pages 31-32: Estimate, Add, or Subtract – Sort word problem key words
Pages 33-34: Estimate or Exact? – Decide if word problems are asking for an exact answer or an estimated answer
Pages 35-36: Estimation Word Problems
Page 37: Estimate or Exact Word Problems – Solve word problems that are asking for either an exact answer or an estimated answer
Pages 38-39: Spin, Roll, and Estimate – Spin two numbers and then roll a dice to see if you should add or subtract those numbers
Pages 40-41: Estimation Practice – These worksheets require students to practice rounding to the nearest ten, estimate sums and differences, and solve estimation word problems.
Pages 42-44: Going Shopping – I put the items around the room and pretend that the students are going shopping. They pick out two items and write the prices on their sheets. Then they estimate the sum of the two numbers to see how much money they would need to buy both items.
Pages 45-48: Estimation Task Cards, Set 1 – Only estimating sums
Pages 49-52: Estimation Task Cards, Set 2 – Only estimating differences
Pages 53-56: Estimation Task Cards, Set 3 – Estimating sums and differences
Pages 57-60: Estimation Task Cards, Set 4 – Estimation word problems
Pages 61-64: Estimate or Exact? – Decide if each word problem is asking for an exact answer or an estimate
This unit is specifically aligned with Virginia SOLs 2.6 and 2.7.