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Number patterns: twos up to 800

Term 3

Look at the numbers in the orange shaded blocks.
What pattern do you see?

Count in twos from 700 to 800. What comes after 700 when you count in twos?

Count backwards in fives from 800 to 710. What comes before 750 when you count backwards?

Complete the number sequences.

720; 722; 724; ; ;

800; 798; 796; ; ;

Add or subtract two.
1. Add two to the given number. We did the first one for you.

a. 764 + 2 = 766
b. 762 c. 783 d. 756 e. 714 f. 799

2. Subtract two from the given number.
We have done the first one for you.

a. 764 – 2 = 762
b. 762 c. 783 d. 756 e. 714 f. 799

3. What happens when you add or subtract two to or from the numbers above?

Look at the blue circles on the number board.
a. What do you notice about these circles?

b. Extend the following number sequences:

701; 703; 705; ; ;

799; 797; 795; ; ;

725; 727; 729; ; ;

783; 785; 787; ; ;

779; 781; 783; ; ;

Fill in the correct number in each circle on these number lines.

 

 

 

I have a 3-digit number.

The first digit is 7, the next digit is two more than seven, and the last digit is four less than seven.

Now count forward by two from this number. What number do you get?