l4 teacher's notes topic: number & algebra number grids what is the rule to work out the...
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L4Teacher's Notes Topic: Number & Algebra
Number Grids
What is the rule to work out the arrowed numbers?
12
10
20
2
Here are the rules for a number grid.
12
Use the rules to write the missing numbers in these number grids.
12
10
24
94 710
What changes could we make?change the numberschange the operationschange the shapeis there always a unique solution for the last type of grid?could use algebra use percentages - eg find the left number as a percentage of the right
Blank grids are provided
Number GridsHere are the rules for a number
grid.
2
20
10
12This number is the sum of the numbers in the middle row
This number is the product of the numbers in the middle row
What is the rule to work out the arrowed numbers?
Use the rules to write the missing numbers in these number grids.
74 9
12
24
10
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