Green Math Basic I

1,000.00

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Table of Contents

01 – Introduction to numbers

02 – Numbers like 10, 20, 30 …

03 – Subtracting numbers

04 – Two digit numbers

05 – Two digit numbers (carry)

06 – Introduction to geometry

07 – Adding numbers just below base

08 – Subtracting numbers just below base

09 – Easy way to double numbers

10 – Halving two digit numbers

11 – Addition of several numbers

12 – Introduction to odd & even numbers

13 – Introduction to multiples

14 – Meaning of common multiples

15 – An easy way to add numbers

16 – Introduction to digit sums

17 – Introduction to 9-point circle

18 – Getting digit sums really quick

19 – Solving digit sum puzzles

20 – More digit sum puzzles

21 – Checking additions using digit sums

22 – Introduction to halves and quarters

23 – Fractions other than halves and quarters      

24 – Adding columns of numbers

25 – Neat and easy times tables

26 – Multiplying numbers just over 10

27 – Number patterns for times tables

28 – Subtracting from left to right

29 – Cool properties of number nine

30 – Checking subtractions using digit sums

31 – Doubling 2 and 3-digit numbers

32 – Multiplying 2-digit number by 4 and 8

33 – Multiplying halves & quarters by 2, 4, & 8

34 – Halving 3-digit numbers

35 – Multiplying large numbers by a single digit

36 – Writing numbers in words

37 – Converting figures in words back to digits

38 – Subtracting numbers from a base number

39 – Extending the easy subtraction method

40 – Two more extensions of the method

41 – Combining the extensions

42 – Calculating change in the shop mentally

 

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