Adding 10 to 100

Adding 10s  to 100

62 + 30 = 92	61 + 20 =81	28 + 30 =58
42 + 30 =72	64 + 10 =74	73 + 20 =93
55 + 30 =85	76 + 20 =96	69 + 10 =79
14 + 60 =74	32 + 60 =92	52 + 10 =62
42 + 50 =92	37 + 50 =87	45 + 20 =65

Adding 10s and 1s to 100

38 + 41 = ?

30 + 40 = 70 (tens)

8 + 1 = 9 (ones)

70 + 9 = 79

44 + 32 =76	44 + 13 =57	72 + 11 =83
43 + 32 =75	56 + 32 =88	36 + 53 =89
61 + 35 =96	43 + 45 =88	31 + 67 =98

32 + 63 =95	59 + 31 =90	64 + 33 =97
46 + 34 =80	32 + 55=87	23 + 65  =88
54 + 12 =66	63 + 16 =79	17 + 16 =33

Adding 10s and 1s over the ten

45 + 26 =71	63 + 28 =91	56 + 16 =72
54 + 39 =93	59 + 35 =94	27 + 25 =52
63 + 18 =81	76 + 17 =93	64 + 26 =90

Introduction time

Pattern Design

What is the perimeter of a small square? 20cm

What is the area of the yellow rectangle? 50cm

How many small squares do you need for the tile?12

How many triangles are the same size as one rectangle? 2

How many small squares fit in side of the rectangle? 2

Lines of Symmetry

Today I learnt how to do lines of symmetry.