Ms. Hamilton’s 4th

Notes/Reminders

Mathemagic pg.128

Question 1,3 are based on rounding numbers.

When you are rounding to the nearest 100 you must look at your tens. If it is above 50 it rounds up to the next 100. If it is 49 or below round down. e.g. 236 = 200, 456=500

When you are rounding to the nearest 1000 you must look at the hundreds. If it is above 500 it rounds up to the next 1000. If it is 499 or below it rounds down e.g. 1779 =2000, 1239 = 1000

When completing question 6 remember that you cannot take a bigger number from a smaller number.

Question 8 is about adding time while question 9 is about subtracting time.

Mathemagic pg.129

Question 1-4 is based on decimals, try to remember the work we completed both in our mental maths and mathemagic. Look back to that chapter to help you.

Question 5-10 are based on length. Remember 1m = 100cm, 1 km=1000m

Mathemagic pg.130

Question 1 you need to create two multiplication and two division sentences for example:

a. 8×3=24 ; 3×8=24 ; 24÷8=3 ; 24÷3=8

Question 2 – look at the numbers that are missing /replaced

Question 3 – the bigger sum has been broken down into two smaller sums.

Question 4 – long multiplication – 2 lines of multiplication using the magic zero

Question 5 – Connect the answers

Question 6 – Short division with and without remainders

Question 7-10 Problems – remember to use the RUDE strategy – Read, Underline, Draw, Estimate

Mathemagic pg.131

Question 1 – Find the area – counting the squares, putting half squares together to form one full square. Remember to write cm²

Question 2 – Find the perimeter of rectangles- the outside of the shape e.g. length 6cm, width 4cm = 6cm+6cm+4cm+4cm= 20cm

Question 3 – Symmetry

Question 4 – Remember 1kg=1000kg – Look back to the notes contained in the other post based on weight

Question 5 – a. convert all the numbers to decimals first then add

b. remember 9.5 is the same as 9.50

All the above concepts you have completed in class, if you find anything difficult or you have forgotten how to complete that sum look back to the chapter of work.