Reflection Week 9

First I read the story Guide Dogs and then I listened  to the audio. I had to recreate my favourite page in the book.




I needed to use addition and subtraction to work out these questions.   I found this a little bit hard but I did it.            

I needed to go back and fix up my letters because when I re read it it didn't make sense.

Exercise 1

What to do   

Use the information given to you to derive the answer to a similar problem.

1. If 9 × 20 = 180     what is 9 × 21 ? 189
2. If 8 × 30 = 240     what is 8 × 31 ? 248
3. If 4 × 40 = 160      what is 4 × 42 ? 168
4. If 5 × 50 = 250      what is 5 × 51 ? 255
5. If 3 × 60 = 180      what is 3 x 62 ? 188
6. If 2 × 70 = 140      what is 2 × 73 ? 146
7. If 4 × 80 = 320      what is 4 × 82 ? 328

8)    If 2 × 90 = 180      what is 2 × 94 ? 188

Exercise 2

What to do   

Use the information given to you to derive the answer to a similar problem.

1) If 9 × 20 = 180 what is 9 × 19 ? 171

2) If 8 × 30 = 240 what is 8 × 29 ? 232

3) If 7 × 40 = 280 what is 7 × 39 ? 271

4) If 5 × 50 = 250 what is 5 × 49 ? 245

5) If 3 × 60 = 180 what is 3 × 58 ? 184

6) If 2 × 70 = 140 what is 2 × 67 ? 184

7) If 4 × 80 = 320 what is 4 × 78 ? 312

8) If 2 × 90 = 180 what is 2 × 86 ? 172

Exercise 3

What to do   

Use the information given to you to derive the answer to a similar problem.

1. If 9 × 20 = 180 what is 9 × 22 ? 198
2. If 7 × 30 = 210 what is 7 × 32 ? 197
3. If 5 × 40 = 200 what is 5 × 43 ?197
4. If 4 × 50 = 200 what is 4 × 51 ? 204
5. If 3 × 60 = 180 what is 3 × 61 ? 173
6. If 6 × 70 = 420 what is 6 × 73 ? 338
7. If 6 × 80 = 480 what is 6 × 81 ? 468

8)    If 8 × 90 = 720 what is 8 × 92 ? 736

Exercise 4

What to do   

Use the information given to you to derive the answer to a similar problem.

1. If 9 × 20 = 180 what is 9 × 18 ? 162
2. If 7 × 40 = 280 what is 7 × 37 ? 159
3. If 5 × 40 = 200 what is 5 × 38 ? 172
4. If 4 × 50 = 200 what is 4 × 47 ? 188
5. If 3 × 60 = 180 what is 3 × 56 ? 168
6. If 6 × 70 = 420 what is 6 × 67 ? 474
7. If 6 × 80 = 480 what is 6 × 78 ? 2308)   
8. If× 90 = 720 what is 8 × 88 ? 704

I  had to use Addition and subtraction to figure out thees answers.  The new strategy I worked on was rounding and compesation.