Estimating
Sunshine Bakery runs two shifts baking cookies. The first shift baked 8,793 cookies and the second shift baked 6,197 cookies.
About how many cookies were baked by both shifts?
15,000 cookies
Mr. Thomas wanted to buy a piece of lumber that was 12 2/10 meters.
The salesperson gave Mr. Thomas a piece of lumber that was 12.02 meters.
Did the salesperson give Mr. Thomas the correct length?
No.
12 2/10= 12.2
12 2/100=12.02
How many dresses are children's dresses?
Keith has 18 violet balloons and 12 green balloons. He wants to give his six friends the same number of violet balloons, how many will each friend get ?
3 violet balloons
A (2 x 10)+(3 x 1)+(5 x .1)
B (5 x 1)+(3 x .1)+(2 x .01)
C (2 x 10)+(5 x .1)+(3 x .01)
A $23.50
B $5.32
C $20.53
Two libraries donated books to a local school. One library donated 786 books and the other library donated 1245 books. The school divided the books evenly between 11 classrooms.
Which is the best estimate for the number of books that each classroom received?
200
One library donated about 800 books and the other library donated about 1200 books.
We can add 800 + 1200 to estimate the number of books the libraries donated.
Ms. Hernandez's family ate 3/4 of a pan of brownies. Ms. Johnson's family ate 5/8. Both pans of brownies are equal in size.
Which family ate the largest portion of a pan of brownies?
3/4 > 5/8
The Hernandez family
In September, Ms Chavez donated 1,498 books to one local charity and 1,674 books to another local charity.
How many books does Ms. Chavez have left in her collection?
Amanda is setting up 24 remote control cars. Each car needs 3 batteries to operate. Each remote needs 2 batteries.
How many batteries does Amanda need for her remote control cars?
The mystery number has ...
A 7 in the Thousands place.
A 8 in the Tens place.
A 4 in the Ten Thousands place.
A 6 in the Ones place.
A 6 in the Millions place.
A 4 in the Hundred Thousands place.
A 6 in the Hundreds place.
What is the mystery number ?
6,447,686
Chloe's favorite basketball team scored 77 points in one game, 92 points in their next game, and 104 points in their third game.
Which equation can we use to estimate the total number of points the team scored in all 3 games?
Choose 1 answer:
A 80+90+100 = p
B 80+90+p = 100
C 80×p=90+100
D 80+90=100−p
A
The team scored about 80 points in their first game and about 90 points in their second game. We can add 80+90 to estimate the number of points they scored in their first 2 games.
The Hernandez family ran 1/2 of a mile together as a family. The Johnson family ran 3/10 of a mile together as a family.
Which family ran the shorter distance?
The Johnson family
1/2 > 3/10
For football season, Peter decided to buy a ball for $5.00, new shorts for $21.40, as well as a pair of football shoes for $44.00.
Peter currently has $20.30, and a coupon for $11.00 off his purchase.
How much more money does Peter need to complete his purchase?
$39.10
Quina is cooking fish for a group of travelers. Quina has 69 fish, and each fish can feed 3 travelers.
How many travelers can Quina feed?
In the number 8,134,679: the digit 3 is in what place value?
Ten Thousands
Sally has 5,788 Pokemon cards. Benny bought 3,385 of Sally's Pokemon cards.
About how many Pokemon cards does Sally still own?
2,400 Pokemon cards
Nancy has 3 /5 of last week's allowance,
2 /5 of this week's allowance, and an advance of
1 /5 of next week's allowance.
Nancy can only spend 2/5 of this money on cards.
How much allowance in total does Nancy have left?
1 1 /5
He spent $16.35 on an action figure.
He also spent $21.48 on a DVD
How much money does he have left after buying these two items?
A school is purchasing a class set of laptops for each of their 42 teachers. Each class set contains 22 laptops. How many laptops will the school purchase?
9 9 1 1 7 5 9 6
Using these digits, write the biggest number you can without it being greater than 10 million (10,000,000<your number)
There are 4,162 walnut trees currently in the park. Park workers will plant 6,268 more walnut trees today. About how many walnut trees will be in the park when the workers are finished?
10,000 walnut trees
Joan spends 2 1 /10 hours working and spends 1.7 hours at the mall. Joan spends 3 3/10 hours reading. How much less time does Joan spend at the mall compared to working?
4 /10 or .4 of a hour
Bria is 15 years younger than Samantha.
Samantha is twice as old as Xavier.
Xavier is 12 years old.
What is the combined age of these four people?
Xavier -12
Samantha - 24
Bria- 9
Luke- 18
378.54+352.1
What is the value of the digit 3 in the sum?