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Lesson · Grade 4 · Mathematics

3.75 + 8.6

  • Grade 4
  • Mathematics
  • 59 s
  • British Columbia
  • BC4-MA-14

Concept: Adding decimals

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In one sentence

The question this lesson answers

How do we add 3.75 and 8.6? Let us find out.

First, line up the decimal points, one above the other.

Transcript

What the lesson says

How do we add 3.75 and 8.6? Let us find out.

First, line up the decimal points, one above the other.

One place is empty. Fill it with a zero. The value stays the same.

Now add each column, starting from the right.

5 plus 0 is 5.

7 plus 6 is 13.

Write 3 and carry 1.

Bring the decimal point straight down.

Now add the whole numbers the same way.

1 plus 3 plus 8 is 12.

Write 2 and carry 1.

There is only one digit here, so bring it straight down.

So 3.75 plus 8.6 equals 12.35.

Curriculum

Where this fits

British Columbia, Grade 4

Mathematics, Number: addition and subtraction of decimals to hundredthsBC4-MA-14

Previous: Division with a Remainder: 29 ÷ 4Next: 15.2 − 7.85

British Columbia, Grade 5

Mathematics, Number: addition and subtraction of decimals to thousandthsBC5-MA-16

Previous: What a Remainder Means in a Word ProblemNext: 15.2 − 7.85

British Columbia, Grade 7

Mathematics, Number: operations with decimalsBC7-MA-15

Previous: Order of Operations with Integers and BracketsNext: 15.2 − 7.85

This lesson is also listed in Grade 5 and Grade 7.

The outcomes and strands follow the British Columbia curriculum.

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