Approximation and Estimation: Pre-Assessment

Estimating is to....

• find the exact answer

• find something close to the correct answer

• use an algorithm

Tags

CCSS.3.OA.D.8

When estimating 319+ 452 you should...

• Round both numbers to the nearest ten and add them mentally

• Line both numbers up and solve to find the answer

• Round both numbers to the nearest hundred and add them mentally

• Round both numbers to the nearest tenth and add them mentally

When estimating 1322+ 2989 you should...

• Round both numbers to the nearest ten and add them mentally

• Line both numbers up and solve to find the answer

• Round both numbers to the nearest hundred and add them mentally

• Round both numbers to the million and add them mentally

When estimating 23.45+ 26.53 you should...

• Round both numbers to the nearest tenth and add them mentally

• Line both numbers up and solve to find the answer

• Round both numbers to the nearest hundred and add them mentally

• Round both numbers to the million and add them mentally

Estimate my change.... I buy a $28.75 basketball, I give a $50 note , my change will be about?

• $78.75

• $25

• $20

• $30

Tags

CCSS.8.NS.A.2

Estimate the cost.... I buy 3 pencils for $1.95 each.

• 3 x $2 = $6

• 3 x $1.50 = $3.50

Tags

CCSS.5.NBT.B.7

To approximate is to...

• Guess randomly

• Show that something is almost, but not completely, accurate or exact

• Use a proximity algorithm

• Solve exactly

Tags

CCSS.RI.4.10

CCSS.RI.5.10

CCSS.RI.6.4

CCSS.RI.7.4

CCSS.RI.8.4

Approximate... I ran 393m to my Grandpa's house, If i run back the total distance ran will be?

• 800m

• 600m

• 39.3m

• 750m

Tags

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

Approximate... I usually run a kilometre ever 4min 23sec, to run 3km will take me about?

• 13 minutes

• 11 mins

• 40 mins 230 seconds

• 4 minutes, 23 seconds

Tags

CCSS.6.RP.A.3B

How many significant figures are there?

100.00

• 1

• 3

• 4

• 5