Mental Math Activities

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Presentation transcript:

Mental Math Activities Mathematics 8 Support Mental Math Activities

12.5 x 4 = Could use double-double strategy, or distributive property, or halve-double strategy From Mental Math in Mathematics 8: page 4

is between what two whole numbers? From Mental Math in Mathematics 8: page 5

Estimate the sum 3/7 + 7//8 + 1/10  ½ + 1 + 0 = 1½ 3/7 + 7//8 + 1/10  ½ + 1 + 0 = 1½ From Mental Math in Mathematics 8: page 7

Which numbered image shows a translation of Figure A? From Mental Math in Mathematics 8: page 12

Reproduce the transformation A  B Give teachers a piece of dot paper. Then show them this slide, in which the pre-image and the image will be seen for 5 seconds. The image will then disappear, leaving only the pre-image. Ask the teachers to reproduce the transformation. From Mental Math in Mathematics 8: page 13

Solve for x From Mental Math in Mathematics 8: page 16

Which of these mat plans would result in this building? From Mental Math in Mathematics 8: page 18

Express 90% as a fraction From Mental Math in Mathematics 8: page 18

Express 0.165 as a percent From Mental Math in Mathematics 8: page 18

8 is 25% of  From Mental Math in Mathematics 8: page 20

From Mental Math in Mathematics 8: page 21

28 + 36 + 22+ 34 Calculate the mean of 28 + 22 and 36 + 34 are compatible numbers From Mental Math in Mathematics 8: page 22

Evaluate: 4 x 100 x (–8) From Mental Math in Mathematics 8: page 25

2 x 24 x 50 = From Mental Math in Mathematics 8: page 26

3x + 4 – 6x – 10 Combine Like Terms From Mental Math in Mathematics 8: page 29

x + 6 = –1 Mentally solve for x From Mental Math in Mathematics 8: page 30

Evaluate 5 + 4x when x = –4 From Mental Math in Mathematics 8: page 30

Calculate the volume From Mental Math in Mathematics 8: page 35