Multiplication and Division
Patterns with Tens,
Hundreds, and Thousands
Patterns with Tens,
Hundreds, and Thousands
Use place value and patterns to find the product.
4 × 300 =
1,200
2,400 = ___ hundreds
24
Numbers that are easy to use for mental computation
are called ________
Compatible numbers.
What is the value of n?
70 × 2 – 5 × 9 – 10 = n
85
Find 4 × 525. Use expanded form.
=4 x (500+20+5)
=(4 x500) + (4 x20) + (4 x 5)
=2000+80+20
=2,100
Marci bought 6 notebooks. Each notebook has 80 sheets of paper. How many sheets of paper does Marci have? Write an equation.
480 sheets of paper or 48 tens
520,000 = 520 ______
Estimate the product and the solve.
8 × 591
12,000
4,728
A softball league has 17 teams. Eight of the teams have 12 players each. The rest of the teams have 13 players each. How many players are in the league?
213
Multiply 2,519 × 3 . Use Partial products to find the product.
Show work on the board. Has to be written vertically and by place value.
=7,557
30 ÷ 6 = ___
300 ÷ 6 = ___
3,000 ÷ 6 = ___
5
50
500
Regroup and Rename by all place values.
485,100
4 hundred thousands
48 ten thousands
485 thousands
4,851 hundreds
48,510 tens
485,100 ones
Find the product and quotient for the two equations below.
420 ÷ 6
5 × 36
70
180
What is the value of n?
342 – 30 + 7 × 38 = n
578
Estimate the product. 4 × 976. Write new equation!
4 x 1,000= 4,000
Fil in the Blank.
5 × 4 ones = ones
5 × 4 tens = tens
5 × 4 hundreds = Hundreds
5 × 4 thousands = Thousands
20 ones
20 tens
20 hundreds
20 thousands
Regroup and rename 26,000 in two different ways.
Answers will vary.
Ex; 2 ten thousands and 260 hundreds
Tickets to the carnival cost $7. The manager sells 225 tickets in one hour. Which of the following best estimates the ticket sales for that hour?
A. It is between $200 and $300.
B. It is between $700 and $1,400.
C. It is between $1,400 and $2,100.
D. It is between $2,100 and $2,800.
C
What is order or operation? What is an acronym for it?
-a set of rules that gives the order in which calculations are done.
-is worked left to right, first multiply and divide, and then add and subtract.
PEMDAS!
List all the partial products for 8 x 465.
3,200, 480, 40
Complete the pattern.
5 × 6 = _____
5 × ___ = ___
5 × 600 = ____
5 × ____ = ____
30
60=300
3,000
6,000=30,000
Students at a school collected 11,000 cans of food for the community food pantry. They can pack the cans in boxes of 100 to take them to the pantry. How many boxes will they need to pack all of the cans?
110 boxes
Select all the equations that have a value of 200.
A 5 × 40 = ■
B 120 ÷ 6 = ■
C 2 × 5 × 100 = ■
D 10 × 2 × 10 = ■
E 8,000 ÷ 4 = ■
F 1,800 ÷ 9 = ■
A, D, and F
*Challenge* (CAN BE DONE WITH ENTIRE TEAM)
The sum of a 3-digit number and a 1-digit number is 138. The product of the numbers is 536. If one number is between 130 and 150, what are the numbers?
134; 4
In which problems do you regroup ones as tens?
A. 2 × 48
B. 4 × 54
C. 3 × 23
a and b.