3-1 to 3-2
6 x 600
3,600
Draw an area model to find 22 x 7
= 154
Use mental math to multiply:
4 x 25 x 6
600
Which numbers show how to multiply 147 x 4
a. 300
b. 400
c. 160
d. 21
e. 28
b,c,e
7 x 4
7 x 40
7 x 400
7 x 4,000
28
280
2,800
28,000
Draw an area model to find 674 x 3
= 2,022
Draw an area model to find 4,539 x 7
31,773
Lee's bakery bakes 342 cookies and 74 muffins every hour. How many baked goods are baked in 6 hours?
2,496 cookies and muffins
Sarah earns $77 babysitting. She saves all of her earning for 6 weeks. Estimate to determine about how much money Sarah saves.
80 x 6 = $480
Draw an area model to find 6, 999 x 4
= 27, 996
Choose all of the expressions that have a product of 280
a. (2x100) + (8x10)
b. (2x100) x (8x10)
c. 140 x 2
d. 20 x 8 x 1
e. 8 x 28
a, c
The school was selling calendars over 3 days. Estimate to find out about how much calendars were sold in 3 days.
Monday: 22 calendars sold
Tuesday: 34 calendars sold
Wednesday: 57 calendars sold
20 + 30 + 60 = 110 calendars
Choose all of the expressions that can be used to find 1,322 x 9
a. 9 x (1,000 + 300 + 20 + 2)
b. 9 x (1,000 + 300 + 30 + 2)
c. 1, 322 + 9
d. (9x1,000) + (9x300) + (9x20) + (9x2)
e. 1,322 x 9
a, d, e
Use mental math strategies to find 4 x 1,880
*You need to include an equation
= 7,520
Mr. Smith sells tortillas in bags of 20 and 65. If he sells 7 bags of 20 and 4 bags of 65, how many tortillas did Mr. Smith sell?
400 tortillas