Menu

Lansdowne

Primary School

Relationships. Wellbeing. Achievement.

Maths

Chunky Monkeys

 

6 digit number

Rounded to the nearest 10

Rounded to the nearest 100

Rounded to the nearest 1,000

Rounded to the nearest 10,000

234,219

 

 

 

 

326,329

 

 

 

 

742,314

 

 

 

 

456,322

 

 

 

 

552,645

 

 

 

 

736,982

 

 

 

 

982,092

 

 

 

 

372,004

 

 

 

 

 

Amy has 234,218 leaflets and Martin has 237,218. Approximately how many do they have altogether? Show your working.

 

 

Did you round the numbers to the nearest 10, 100, 1,000 or 10,000?

 

Why?

 

       
     
 
   
 
   

 

 

 

Explain the effect of rounding your numbers to larger amounts e.g. 1,000 or 10,000. (think about how reliable your approximations are).

 

 

 

 

Number Ninjas 

 

 

6 digit number

 

Example:

328,283

Rounded to the nearest 10

 

328,283

Rounded to the nearest 100

328,283

Rounded to the nearest 1,000

328,283

Rounded to the nearest 10,000

328,283

 

234,219

 

 

 

 

326,329

 

 

 

 

742,314

 

 

 

 

456,322

 

 

 

 

552,645

 

 

 

 

736,982

 

 

 

 

982,092

 

 

 

 

372,004

 

 

 

 

 

Amy has 234,218 leaflets and Martin has 237,218. Rounding the amount to the nearest 1,000, approximately how many do they have altogether?

Show your working.

 

 

Pi-Thons and Limit Breakers 

 

Number

 

 

Rounded to the nearest 10

 

Look at the units!

Rounded to the nearest 100

 

Look at the tens!

Rounded to the nearest 1,000

 

Look at the hundreds!

923

 

 

 

 

729

 

 

 

1,294

 

 

 

5,218

 

 

 

3,908

 

 

 

23,593

 

 

 

83,256

 

 

 

421,593

 

 

 

 

Top tip:

  • When you round up (5 and above) the column on the left will change by 1.
  • When you round down, (4 or below) the column on the left stays the same!

 

Top