What is the total when estimating?
1.69 x5= Tax is included.
Younger sister says it only costs 5 bucks.
Older brother says it only costs 10 bucks.
What are they thinking, how are they estimating?
Younger sister is thinking Under estimating, just 1.00x5= $5.00
Older brother is thinking Over estimating, 2.00x5= $10.00
Where do the decimals go?
2.2 x 1.8= 3960
Where do the decimals go here?
3.9 x 5.8= 22620
Is $9.00 enough and prove it.
2.57 x 0.45= 118220
Pronghorn: 58kg Dall's: 1.5 times as much as a pronghorn.
How much does Dall's weigh?
Approximate: 90kg. 60x1=60 kg.
90 kg. (In between the two weights.)
60x2=120 kg.
Exactly: 87kg.
Homework is:
46x2.5 = 64x4.5 = First estimate then calculate.
Here is a video for multiplying decimals. If you click multiplying decimals it will take you to a link that explains the multiplying of decimals. Good Luck and I hope it isn't hard to understand.
Mr.Isfeld will be collecting number of the day tomorrow.
