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# Year 6

### Using Our Maths C

#### Following Units 12-15

These activities bring together the different mathematical skills that your child should now know. By combining these skills in puzzles and activities your child will need to reason and think of solutions, as well as complete calculations. This will help your child to really understand the skills they are learning.

Talk through each group of questions and ask your child how they are going to solve the challenges.

It’s good to get stuck sometimes! When this happens discuss the challenge in the following order:

• What do we need to find out to solve the challenge?
• What do we know by looking at the question?
• Want could we do first?
• How would that help us?

Is there anything else we could do?

#### Activities:

Work these out without a calculator, then check them with one.
1.       50% of 280
2.       25% of 140
3.       75% of 560
4.       40% of 260
5.       35% of 180

What is the square root of these numbers? Experiment to find the answer by estimating. Only use a calculator when you have to.
6.       484
7.       225
8.       1225
9.       3721
10.     3364

Say each number aloud first. What is the value of the red digits?
11.       38,406
12.       263,801
13.       4,296,816
14.       18,205,205
15.       268,268,268

Make up a calculation that works exactly using each number once. You have to decide which functions to use and which order to put the numbers in.
16.       782     16      38      21
17.       14      126      5      45
18.       20      36      80      5
19.       350      1050      2      6
20.       0.1      10      10      1000