Estimating

3+5x2 =16

True or False

7-3x2=1

True or False?

5x6+2=32

True of False?

(10-4)x3 = 18

True or False?

4+4x2 = ?

3+4x5-6

(3+4)x5-6

4²+3x2

3+15÷5-4x2

40x3

50x70

120x20

600÷30

240÷8

1600÷40

45000÷90

Write three thousand and seven in figures.

Write two hundred and thirteen thousand, four hundred and

seventeen in figures.

278x41

What number would you use to estimate 278?

A 280

B 270

C 300

278x41

What number would you use to estimate 41?

A 40

B 50

C 41

278x41

What do you estimate the answer to be?

31.97x 17.21

What number would you use to estimate the 31.97?

31.97x 17.21

What number would you use to estimate the 17.21?

31.97x 17.21

What do you estimate the answer to be?