KnowledgeMadeFun, home

Lesson · Grade 4 · Mathematics

Subtracting Across Zeros: 5003 − 1468

  • Grade 4
  • Mathematics
  • 1 min 25 s
  • British Columbia
  • BC4-MA-08

Using 5003 − 1468, the video shows that when the ones need regrouping and the tens and hundreds are both 0, you go left to the thousands and trade down step by step: 1 thousand for 10 hundreds, 1 hundred for 10 tens and 1 ten for 10 ones, giving 4 thousands, 9 hundreds, 9 tens and 13 ones, with place value disks moving to match the written working. Each column is then subtracted to get 3535, the answer is checked by adding 3535 + 1468 = 5003, and it ends on the recap "Meet a 0? Go left until you can trade."

Concept: Subtracting four-digit numbers with regrouping

Anyone can watch two lessons on the website without an account. Signing in is free, no payment and no card, and opens three a day; Plus has no limit.

Loading

Share to Google Classroom

In one sentence

The question this lesson answers

What is 5003 minus 1468?

5003 is 5 thousands, 0 hundreds, 0 tens and 3 ones.

Transcript

What the lesson says

What is 5003 minus 1468?

5003 is 5 thousands, 0 hundreds, 0 tens and 3 ones.

Start with the ones: 3 is less than 8, so we regroup.

The tens and the hundreds are both 0, so go to the thousands.

Trade 1 thousand for 10 hundreds.

Then trade 1 hundred for 10 tens.

Then trade 1 ten for 10 ones.

Now there are 4 thousands, 9 hundreds, 9 tens and 13 ones.

Ones: 13 minus 8 is 5.

Tens: 9 minus 6 is 3.

Hundreds: 9 minus 4 is 5.

Thousands: 4 minus 1 is 3.

So 5003 minus 1468 is 3535.

Check by adding: 3535 plus 1468 is 5003.

When you meet a 0, keep going left until you can trade.

Curriculum

Where this fits

British Columbia, Grade 4

Mathematics, Number: addition and subtraction to 10 000BC4-MA-08

Previous: Adding Four-Digit Numbers with RegroupingNext: Estimating Sums and Differences by Rounding

The outcomes and strands follow the British Columbia curriculum.

Keep going

More on this topic