Fluency Check
324-203
121
7 x 682
4,774 (7x600) + (7x80) + (7x2) = 4,200 + 560+14
Use estimation to solve:
4 x 7,812
4 x 7,000 + 4 x 800
= 31,200
Solve using any method
215 x 32 =
6,880
A bus ticket costs $87. How much will 6 tickets cost?
$522
638 + 127
765
Box Method
5 x 39
5 x 30= 150
5 x 9= 45
150 + 45= 195
Use estimation to solve:
5 x 3,487
5 x 3,000 + 5x 500
= 17,500
Solve using any method
48 x 32
1, 536
Jorge earns $99 a week. He goes on vacation in 9 weeks. How much will he earn before his vacation?
$891
8,990 - 8,501
17,491
6 x 185
6 x 100= 600
6 x 80 = 480
6 x5= 30
600 +480 +30= 1,110
Use Estimation to solve:
7 x 8,894
7 x 8,000 +7x 900
= 62,300
Solve using any method
64 x 18
1,152
The theater group is making costumes for their play. There are 9 costume changes for each of the 23 performers. How many costumes does the theatre group need?
9 x 23= 207 costumes
211,549 - 144,096
67,453
32 x 45
30 x 40= 1200
30 x 5= 150
2 x 40= 80
2 x5 =10
1,200 + 150 + 80 +10=1,440
What would the estimate be if you added
4 x 600 to 4 x 3,000?
14,400
Solve using any method
342 x 23
7, 866
Manny has 6 boxes of markers. June has 5 boxes of markers. Each box contains 8 markers. How many markers do Manny and June have altogether?
Manny has 48 markers.
June has 40 markers.
48 + 40= 88 markers.
118,242 + 893,915
1,021,157
78 x 32
70 x 30= 2100
70 x 2= 140
8 x30= 240
8 x 2= 16
2,496
Multiply 6 x 5,283 using the short cut method.
Round and estimate to check your work.
short cut method answer: 31,698
6 x 5,000 = 30,000
6 x 300= 1, 800
30,000 + 1, 800= 31, 800
Solve using any method
1,042 x 21
21,882
Natalie wants to find out how much her cat weighs. She picks him up and steps on the scale. Together they weigh 95 pounds. How much does the cat weigh?
Cannot be solved. We do not know Natalie's weight.