Simon's maths

“Marvellous Maths” - Octagons

Term 2, Week 1

WALT: solve addition problems where one number is close to 10 and the answer is not more than 100.

Noah has 27 rugby cards and Bobby has 9. How many do they have altogether?

(Show your working out here - I want to see how you can use the strategy we have been learning as a group!) 27 + 9=36

+ 1 _9=10

-1_27=26

26 + 10 = 36

Nyree has saved $36 in pocket money. Teija has saved $12. How much money do they have between them?  $38+ $10=48

12-2 10                                                                                            38+ 40

(Show your working out here!)

Use Educreations on the iPad to share how you worked this question out. Post your movie on your blog.

$36+$12=

take away 2 from the 12 and add it on to the 36

38+10=

3+1=4

40

8+0=8

8

For the following questions, show your working out underneath. I have done the first one for you.

47 + 9 =

47-1 + 9+1 = 46 + 10 = 56.

44 + 8 =

44-2  +8  10    42+10=52

17 + 12 =

12-2  +17   19+10=29

37 + 9 =

37-1  9+    36+10=46

55 + 8 =

55+ 2  8+10   53+10=63

My Basic Facts - “Doubles”

Write down all the numbers that add together to make 10.

10+0=10

0+10=10

9+1=10

1+9=10

5+5=10

4+6=10

3+7=10

2+8=10

Greater than or less than:

Use these signs > (greater than), < (less than), or = (equal) to make the maths sentence true. I have done the first one for you.

7   >   4

12  >    8

57  <    58

19   <   29

13 >    3

27  =    27

17  >    12

31  =    31

2+3  =   4+1

Extra for Experts:

I have six sides. What shape am I? Hexagon

I have eight sides. What shape am I? octagon

I have three points. What shape am I? Triangle

I have five edges. What shape am I? pentagon

I have four sides but I am not a square. What shape am I? diamond