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Adding Two and Three-Digit Numbers
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Adding Two and Three-Digit Numbers
Add each number carefully. Line up the ones, tens and hundreds when using a written method. Show your working where space is provided.
Add with a written method
1.Work out 263 + 54. Show your written method.
2.Calculate 178 + 86. Show how you regroup, if needed.
3.Find the total of 435 and 79.
4.Add 326 + 148. Record your working and answer.
Choose and explain
5.What is 347 + 68?
- 405
- 415
- 425
- 515
6.Select the correct sum for 286 + 57.
- 333
- 343
- 353
- 413
7.In 582, how many hundreds, tens and ones are there?
8.For 69 + 7, what is the ones-column sum before regrouping? Do you need to regroup the ones?
Estimate, then calculate
Round each addend to the nearest ten for your estimate.
9.Estimate 364 + 58 by rounding each number to the nearest ten, then find the exact sum.
10.Estimate 517 + 36 by rounding each number to the nearest ten, then calculate the exact answer.
Addition around the canteen
11.The canteen prepared 236 cheese rolls and 87 vegetable rolls. How many rolls did it prepare altogether? Show your calculation.
12.Ana counted 148 apples and Manaia counted 276 apples ready for the canteen. How many apples did they count in total?
13.Why does placing digits in the correct ones, tens and hundreds columns help when adding?
3 printable pages
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