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Lesson · Grade 4 · Mathematics

Dividing by Breaking the Number Apart: 96 ÷ 4

  • Grade 4
  • Mathematics
  • 1 min 11 s
  • British Columbia
  • BC4-MA-12

96 is shown as base-ten blocks and broken into 80 and 16, two parts that 4 divides evenly; the 8 tens and then the 16 ones are shared into 4 equal groups, giving 80 ÷ 4 = 20 and 16 ÷ 4 = 4. Adding the two answers gives 96 ÷ 4 = 24, which is checked with 4 × 24 = 96 before a one-line recap: break it apart, divide each part, add the answers.

Concept: Dividing by a one-digit number by breaking the number apart

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In one sentence

The question this lesson answers

What is 96 divided by 4?

We can think of it as sharing 96 into 4 equal groups.

Transcript

What the lesson says

What is 96 divided by 4?

We can think of it as sharing 96 into 4 equal groups.

Break 96 into two parts that are easy to divide by 4.

8 tens make 80.

The 1 ten and 6 ones left make 16.

So 96 is 80 plus 16.

Share out the 8 tens, and each group gets 2 tens.

So 80 divided by 4 is 20.

To share the 16, trade the ten for 10 ones.

Share out the 16 ones, and each group gets 4.

So 16 divided by 4 is 4.

Each group has 20 plus 4, which is 24.

So 96 divided by 4 is 24.

Check: 4 times 24 is 96, the number we started with.

To divide this way, break the number into easy parts, divide each part, and add the answers.

Curriculum

Where this fits

British Columbia, Grade 4

Mathematics, Number: multiplication and division of two- or three-digit numbers by one-digit numbersBC4-MA-12

Previous: Multiplying a three-digit number by a one-digit number with an area modelNext: Division with a Remainder: 29 ÷ 4

The outcomes and strands follow the British Columbia curriculum.

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