Checking Methods L1-L2

• Mathematics
• Lower Secondary (Key Stage 3)

Without working out the exact answer use estimation to work out which answer is the most likely to be correct to the question below
495 + 306

1. 601
2. 801
3. 701
4. 901

Without working out the exact answer use estimation to work out which answer is the most likely to be correct to the question below
397 + 209

1. 606
2. 806
3. 506
4. 706

Which of the following would be the best estimate for
1.9 x 197.6

1. 40
2. 400
3. 4000
4. 40,000

Craig buys 17 bottles of water at £1.62 each. Which calculation should Craig use to estimate the total cost?

1. 17 x 1.62
2. 17 x 1.60
3. 20 x 2
4. 20 x 1.62

Mr Blevins wants to buy a revision guide for each student.
There are 138 pupils.
The revision guides cost £3.75 each. Estimate how much the revision guides cost in total.

Joe drives around 82 miles each week. Estimate how many miles Joe drives in a year.