Adding using the column method | Exit Quiz | Oak National Academy

Why might it be useful to estimate the answer to an equation prior to calculation?

• Estimating before calculating helps you set out your calculations on paper.

• Estimating before calculating helps you to practise your adding strategies.

• Estimating before calculating provides an approximate answer which you can check your actual answer against.

• Estimating before calculating shortens the amount of time it takes to solve an equation.

2. What is a suitable estimate for the equation: 451 082 + 339 721?

• 450 000 + 340 000 = 790 000

• 451 082 + 339 721 = 790 803

• 451 083 + 339 722 = 790 805

• 500 000 + 200 000 = 700 000

3. Use the column method to solve: 289 109 + 463 229 =

• 452 338

• 552 338

• 652 338

• 752 338

4. Use the column method to solve: 632 781 + 10 385 =

• 643 166

• 743 166

• 843 166

• 943 166

5. Use the column method to solve: 5411 + 1389 + 2013 =

• 7813

• 8813

• 8913

• 9813