NUMBER PYRAMID 1

Can you complete this number pyramid? Each brick in the pyramid should contain a value equal to the sum of the two blocks directly below it.

see answer keys below

                                                  ?

                                             ?       228

                                        ?        ?       ?

                                   ?      63       57      ?

                               ?      ?        ?        ?       26

                          11    12      ?       ?       12       ?

                       ?       ?        ?       ?     1          ?        ?

DID YOU KNOW?
Practicing skills in blocks makes them easier to learn, but harder to remember. When we’re learning a skill like shooting hoops in basketball, handwriting or even surgical techniques, the temptation is to practice in blocks of each type of motion. For instance, in learning to write, we’d do 100 perfect As, then 100 perfect Bs, etc.
Unfortunately, although research has shown that practicing like this helps us get better quicker, the effect is short-lived – it leads to worse retention than if we practice in mixed blocks.            

ANSWER KEYS:

                                                 465

                                            237     228

                                       117      120      108

                                   54      63         57       51

                                23    31        32        25       26

                            11    12      19        13       12       14

                          6     5        7       12        1          11     3

Source:

Moore, G. & Stafford, T. (2010). The Rough Guide Book of Brain Training. Rough Guides


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