2 digit by 1 digit
3 digit by 1 digit
Estimate using rounding
Multiples of 10
Multiples of 10
100

10 x 5

what is 50

100

574 x 2

1148

100

27 x 32; tell what you have estimated to 

30 x 30 = 900

100

10 x 56

560

100

70 x 63

4410

200

83 x 7

what is 581?

200

432 x 5

2160

200

12 x 54; tell what you have estimated to

10 x 50= 1000

200

40 x 72

2880

200

20 x 54

1080

300

15 x 6

90

300

143 x 3

429

300

57 x 79 tell what you have estimated to 

60 x 80 = 4800

300

30 x 74

2220

300

69 x 50

3450

400

54 x 2

108

400

457 x 7

3199

400

15 x 97; tell what you have estimated to

20 x 100= 2000

400

40 x 24 

960

400

74 x 10

740

500

61 x 6

366

500

123 x 3

369

500

42 x 84 tell what you have estimated to 

40 x 80= 3200

500

60 x 12

720

500

84 x 20

1680