New
New
Year 3

Use column addition to solve problems

I can use column addition to solve problems.

New
New
Year 3

Use column addition to solve problems

I can use column addition to solve problems.

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Lesson details

Key learning points

  1. Estimate the answer first to improve your accuracy
  2. The addends are written in columns with the same value digits in the same column
  3. The sum is recorded underneath the addends with the same value digits in the same column

Common misconception

Pupils may not refer to the size of the numbers when manipulating the digit cards.

Encourage them to talk about the size of the numbers and whether the digit cards represent ones, tens or hundreds.

Keywords

  • Addend - An addend is a number added to another.

  • Sum - The sum is the the total when numbers are added together.

  • Column addition - Column addition is a way of adding numbers by writing a number below another.

Pupils would benefit from having the number cards 0-5 to help them solve the problems in the lesson.
Teacher tip

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Video

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6 Questions

Q1.
Which addition calculation is represented by the base ten blocks?
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115 + 41
1115 + 14
125 + 14
Correct answer: 125 + 41
Q2.
What is the missing sum in the column addition?
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Correct Answer: 56, fifty-six
Q3.
What is the value of the missing number in the column addition?
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Correct Answer: 10, ten
Q4.
What is the value of the missing number in the column addition?
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Correct Answer: 3, three
Q5.
5. What is the missing addend in the column addition?
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Correct Answer: 31, thirty-one
Q6.
What is the missing addend in the column addition?
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Correct Answer: 223, two hundred and twenty-three

6 Questions

Q1.
What is the missing addend in the column addition?
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21
22
30
Correct answer: 31
Q2.
What is the missing addend in the column addition?
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Correct Answer: 211, two hundred and eleven
Q3.
Jun arranges the number cards to make two 2-digit numbers. Which numbers would add to make the sum?
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35 + 40
54 + 31
Correct answer: 53 + 42
Correct answer: 43 + 52
Q4.
Jun arranges the number cards to make two 3-digit numbers. Which numbers would add to make the sum?
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Correct answer: 320 + 451
340 + 251
341 + 520
Correct answer: 351 + 420
Q5.
Match each pair of addends to the sum.
Correct Answer:13 + 52 =,65

65

Correct Answer:14 + 52 =,66

66

Correct Answer:45 + 32 =,77

77

Correct Answer:31 + 25 =,56

56

Q6.
Match each pair of addends to the sum.
Correct Answer:350 + 124 =,474

474

Correct Answer:310 + 245 = ,555

555

Correct Answer:450 + 123 =,573

573

Correct Answer:350 + 234 =,584

584