Ordering decimals

Ordering decimals

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This task is about ordering decimal numbers.

Question 1Change answer

 
a)  At training, sprint times were: 
 
Phillipa 20.99 s Denise 20.09 s Dalia 20.81 s
Wendy 20.49 s Rena 20.30 s Sharon 20.55 s
 
Choose the name of the person who had the:
 
i)    fastest time        PhillipaDeniseDaliaWendyRenaSharon
ii)   second fastest   PhillipaDeniseDaliaWendyRenaSharon
iii)  third fastest      PhillipaDeniseDaliaWendyRenaSharon

Question 1Change answer

game fish.png
b) On a fishing trip the heaviest fish were:
 
Sam's 3.958 kg Jean's 3.709 kg Katie's 3.580 kg
Terry's 3.625 kg Selina's 3.740 kg Ling's 3.902 kg
     Choose the name of the person who caught the:
 
     i)   heaviest fish       SamJeanKatieTerrySelinaLing
     ii)  second heaviest fish   SamJeanKatieTerrySelinaLing
     iii) third heaviest fish     SamJeanKatieTerrySelinaLing
Task administration: 
This task can be completed with pencil and paper or online (with auto marking displayed to students).
Levels:
3, 4
Description of task: 
Using given times for sprinting and given weights of fish, students order the decimal numbers to give the fastest three times and the three heaviest fish.
Answers/responses: 

 

Y6 (10/1999)

a)

i)

ii)

iii)

Denise

Rena

Wendy

all 3 correct – very easy

b)

i)

ii)

iii)

Sam

Ling

Selina

all 3 correct – moderate

Diagnostic and formative information: 
 

Common error

Likely reason

a)i)

   ii)

   iii)

Phillipa

Dalia

Sharon

Puts results from slowest to fastest rather than fastest to slowest.

b)i)

   ii)

   iii)

Katie

Terry

Jean

Puts results from lightest to heaviest rather than heaviest to lightest.

b)iii)

Jean

Sees 3.709 as bigger than 3.740. Place value problems in hundredths and thousandths.