What this lesson shows
Fixes a mistake
72 has 7 tens, so it sits between 70 and 80. It rounds to 70.
The worked example
The lesson works this one step by step: 72 to the nearest ten. Then your kid tries one like it on paper.
The steps
- The tens it has, and the next ten
- Never below its own ten
- Count the jumps
- Pick the closer ten
Helping at home
Name the tens: 72 is 7 tens and 2 ones, so it sits between 70 and 80, never below 70. Draw the line between those two tens, count the jumps to each, and pick the closer one.
If your kid gets stuck
How many tens does it have?
Watch it with Lux
With Lux, this lesson is a narrated video and a printed page your kid works on. Then Lux helps with the same math on their own worksheet, one question at a time.
More in this unit
- Rounding to the nearest ten
- Look at the ones
- Halfway rounds up
- Adding by jumps
- Adding tens and ones
- Ten ones make a ten
- Subtracting tens and ones
- Trade a ten for ten ones
- Not always small from big
- Count up to subtract
- Two-step word problems
- A story for an equation
- Add four numbers
- Why trading works
- Estimate, then add