Always Demonstrating Delight
Demonstrate writing one number in expanded form to solve (23+38)
2 minute timer
23+38
23+30+8
53+8
61
True or false: Killer whales are considered dolphins
15 second timer
Estimate the number of seats at a Thunderbirds game if every ring hold 77 people and there are 98 rings to one significant figure
2 minute timer
1. 77= 80
2. 98= 100
3. 80x100
4. 8,000
Fill in the blank
divisor / _________ = quotient
30 second timer
What is dividend?
Solve the following
(4x12) x 5 + 6/2
1. (4x12) x 5 + 6/2
2. 48 x 5 + 6/2
3. 240 + 6/2
4. 240 + 3
5. 243
Demonstrate writing one number as the difference between two numbers with one significant figure each to solve (98+137)
2 minute timer
98+137
100-2+137
100+137-2
237-2
235
Demonstrate performing the subtraction one place value at a time to solve (287-149)
2 minutes
287-149
287-100-40-9
187-40-9
147-9
138
Demonstrate changing the order of multiplication to one which produces a number with one significant figure along the way to solve (4x31x25)
2 minute timer
4x31x25
31x4x25
31x100
3100
Demonstrate dividing both the divisor and dividend by a common factor to solve 4800/80
2 minute timer
1. 4800/80
Common factor of 10
2. 480/8
3. 60
Evaluate the following
3 x (6-2)2
2 minute timer
1. 3 x (6-2)2
2. 3 x 42
3. 3 x 16
4. 48
Demonstrate changing the order of addition to one which produces a number with one significant figure along the way to solve (8+13+12) a.k.a the conveinent way
3 minute timer
8+13+12
8+12+13
20+13
33
Demonstrate subtracting a slightly larger number with one significant figure, then compensate with addition to solve (77-29)
2 minute timer
77-29
77-30+1
47+1
48
Estimate how far I could make it on a road trip if my car gets 36 miles per gallon and when I fill up my tank I fill to 12 gallons
2 minute timer
1. 36=40
2. 12=10
3. 40x10
4. 400 miles
Demonstrate looking for an easily recognizable multiple of the dividend which is close to the divisor, then add or subtract to compensate to solve
153/3
3 minute timer
1. 153/3
Common multiple of 3
2. 150/3 + 3/3
3. 50 + 1
4. 51
This male species incubates offspring
** Bonus points if you know the range of how many off spring a this male can produce. I will allow a over/under of 100
(You won't lose points if you get the bonus wrong)
1.5 minute timer
What is a male seahorse?
What is 1000-2500
Sea cucumbers have what color blood
20 second timer
What is yellow?
Which operation occurs first in the following equation
(200+1002) x 12 + 5
30 second timer
Demonstrate multiplying by a slightly larger number with one significant figure then compensate by subtraction to solve
65x98
2 minute timer
1. 65x98
2. 65x100-65x2
3. 6500-130
4. 6370
In one raw ounce there are approximately ___ berries
(I will allow over/under of 5)
30 second timer
What is 50?
This animal has about a 19,000 psi bite force
***Bonus if you can tell me how many PSI it takes to crush a car (you won't lose any points if you're wrong)
45 second timer
What is killer whale?
Solve this equation by utilizing the convenient method
(122+341+659)
NO CALCULATOR
3 minute timer
122+341+659
122+ 1,000
1122
True or false: The milk produced by a female yak after giving birth is called 'beastings'
15 second timer
What is true?
Demonstrate estimating to one figure approximation to solve 2311+6884+3908+9780
3 minute timer
1. 2311+6884+3908+9780
2. 2000 + 7000+ 4000+ 10000
3. 23,000
What does PEMDAS stand for? (HAS TO BE IN THE RIGHT ORDER)
30 second timer
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
Evaluate the following
23-10/2
1.5 minute timer
1. 23-10/2
2. 23-5
3. 18