Maths
Exercise 1
What to do
Use the information given to you to derive the answer to a similar problem.
- If 9 × 20 = 180 what is 9 × 21 ?189
- If 8 × 30 = 240 what is 8 × 31 ?248
- If 4 × 40 = 160 what is 4 × 42 ?168
- If 5 × 50 = 250 what is 5 × 51 ?255
- If 3 × 60 = 180 what is 3 x 62 ?186
- If 2 × 70 = 140 what is 2 × 73 ?146
- 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 ?272
4) If 5 × 50 = 250 what is 5 × 49 ?245
5) If 3 × 60 = 180 what is 3 × 58 ?274
6) If 2 × 70 = 140 what is 2 × 67 ?134
7) If 4 × 80 = 320 what is 4 × 78 ? 312
8) If 2 × 90 = 180 what is 2 × 86 ?176
Exercise 3
What to do
Use the information given to you to derive the answer to a similar problem.
- If 9 × 20 = 180 what is 9 × 22 ?198
- If 7 × 30 = 210 what is 7 × 32 ?224
- If 5 × 40 = 200 what is 5 × 43 ?215
- If 4 × 50 = 200 what is 4 × 51 ?205
- If 3 × 60 = 180 what is 3 × 61 ?183
- If 6 × 70 = 420 what is 6 × 73 ?438
- If 6 × 80 = 480 what is 6 × 81 ?486
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.
- If 9 × 20 = 180 what is 9 × 18 ?162
- If 7 × 40 = 280 what is 7 × 37 ?259
- If 5 × 40 = 200 what is 5 × 38 ?190
- If 4 × 50 = 200 what is 4 × 47 ?185
- If 3 × 60 = 180 what is 3 × 56 ?171
- If 6 × 70 = 420 what is 6 × 67 ?402
- If 6 × 80 = 480 what is 6 × 78 ?468
8) If 8 × 90 = 720 what is 8 × 88 ?704
Exercise 5
What to do
Use the information given to you to derive the answer to a similar problem.
- If 4 × 200 = 800 what is 4 × 201 ?804
- If 7 × 300 = 2100 what is 7 × 301 ?2107
- If 8 × 400 = 3200 what is 8 × 402 ?3216
- If 9 × 500 = 4500 what is 9 × 501 ?4509
- If 5 × 600 = 3000 what is 5 × 602?3010
- If 3 × 700 = 2100 what is 3 × 704 ?2112
- If 2 × 800 = 1600 what is 2 × 803 ?1606
8) If 6 × 900 = 5400 what is 6 × 903 ?5418
Exercise 6
What to do
Use the information given to you to derive the answer to a similar problem.
- If 4 × 200 = 800 what is 4 × 199 ?796
- If 7 × 300 = 2100 what is 7 × 299 ?2093
- If 8 × 400 = 3200 what is 8 × 398 ?3184
- If 9 × 500 = 4500 what is 9 × 498 ?4482
- If 5 × 600 = 3000 what is 5 × 597 ?2985
- If 3 × 700 = 2100 what is 3 × 698 ?2094
- If 2 × 800 = 1600 what is 2 x 797 ?1585
- If 6 × 900 = 5400 what is 6 × 897 ?5382
Exercise 7
What to do
Use the information given to you to derive the answer to a similar problem.
- If 2 × 25 = 50 what is 2 × 24 ?48
- If 4 × 25 = 100 what is 4 × 27 ?108
- If 3 × 15 = 45 what is 3 × 14 ?42
- If 4 × 15 = 60 what is 4 × 17 ?58
- If 6 × 15 = 90 what is 6 × 14 ?84
- If 2 × 25 = 50 what is 2 × 26 ?52
- If 4 × 25 = 100 what is 4 × 24 ?72
- If 3 × 15 = 45 what is 3 × 16 ?48
- If 4 × 15 = 60 what is 4 × 13 ?53
- If 6 × 15 = 90 what is 6 × 17 ?102
Exercise 8
What to do
Use the strategy add a little/subtract a little to solve these problems.
Julie wanted to find 3 × 28.
She knows that 28 is near 30, so she used 3 × 30 = 90 and subtracted 3 × 2 = 6 to get the answer.
Julie recorded this in her maths book
3 × 28 = 90 – 6 = 84
Using Julie’s method find the answer to the following problems. Record your working like Julie did.
1) 4 × 19 76 (2) 3 × 41 123 (3) 5 × 59 295
4) 7 × 52 364 (5) 4 × 73 308 (6) 3 × 37 111
7) 6 × 102 612 (8) 5 × 301 1505 (9) 4 × 698 2792
10) 3 × 499 1497 (11) 7 × 602 4214 (12) 9 × 3999 35991
For maths I have been doing round to higher number and to lower numbers its look hard at first but when you get it is easy.
Reading
For literacy I have been a water cycle which is a little easy but it is my first water cycle ever.
Writing
For writing I have been learning about storms and what make a storm. Learn some new things about storms.
