Page 65 - NUMINO Challenge_B1

Type 7-1 Overlapping Cellophane Papers

Look at the grid in the box below. There is a piece of yellow
cellophane paper placed on top of the squares. The cellophane paper
is flipped across line A, then rotated 180 degrees at point B. What will
be the sum of the numbers that are covered by the cellophane paper?

1234 1234 1234
5678 5678 5678
9 10 11 12 9 10 11 12
13 14 15 16 13 14 15 16 B
9 10 11 12
A 13 14 15 16

1 Color the squares that are covered by the cellophane paper when it is
flipped to the right across line A.

1234 1234
5678 5678
9 10 11 12 9 10 11 12
13 14 15 16 13 14 15 16

A

2 When the cellophane paper from 1 is rotated 180 degrees at point B,
what squares will be covered? Color them.

1234
5678

B
9 10 11 12
13 14 15 16

3 Find the sum of the numbers that are covered by the cellophane paper in 2 .

62 NUMINO Challenge B1