Page 25 - Maths 1

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[2]

15. For grid 1: top value = 2 + 4 (from middle row)

Bottom value = 2 x 4 from middle row = 8

For grid 2 : top value =( + 1) + other middle value = 3 + 1
Other middle value = (3 + 1) - ( + 1)

= 3 - +1 - 1 = 2

Bottom value = ( +1) x 2 = 2 x + 2 x 1= 2 +2

For grid 3 : two middle row values with the variable must add

up to give 5 = 2 +3
Two middle row values with the variable

must give the product as 6 and = 2 x 3

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