Addition & Subtraction to 10,000 (4.N3) · Page 5 of 14
➕ Tracking Place Value
Explaining how to keep digits with the same place value lined up
💡 Tip for parents: This page is about the 'why' behind lining up numbers. Lined-up columns mean ones add to ones, tens to tens, and so on. Graph paper or turning lined paper sideways makes great columns!
Score: 0 / 55 to go
- Question 1
When adding 345 + 2,134, which digit lines up with the 4 in 345?
- Question 2
In 4,567 + 2,345, the ones column is 7 + 5 = 12. What do you do?
- Question 3
Why do we line up digits by place value when adding?
- Question 4
When subtracting 3,000 − 1,456, why do we need to borrow across more than one column?
- Question 5
In 2,345 + 1,678, the tens column is 4 + 7 plus the carried 1 = 12. What happens?