MONDAY MATHS

Question: Robert has 816 marbles. He puts 3/8 of them into his pocket for a game. How many does he put into his pocket??

Lino, Neeven and Brandon's thinking:

3/8 of 816=306 marbles

8x100=800   (We used 100 to get closer to 800. Now we are left with only 16...so)
8x2=16 so... 100 + 2 = 102
800+16=816

102 x 3 (numerator)=306 marbles in his pocket

BIG IDEAS: multiplying 8 x what = 816 rather than dividing 816 and 8
                   : multiplying with 100
                   : multiply by splitting factors

Question: I have 608 sweets. I eat three quarters of them. How many sweets have I eaten?

Sione and Canaan's thinking:

3/4 of 608 =456 sweets

4x150=600
4x2=8 

150+2=152       3x152=? 

                         3x150=450 
                         3x2=6  

450+6=456