Transcript Slide 1 - Crofton School

Fractions as operators
Contributed by Maria Veselova-Smith
Sheet A:
Fill in the missing numbers
÷?
X 1/5
÷?
X?
10
25
÷ 1/2
X?
X?
÷?
2/3
Sheet B:
Fill in the missing numbers
÷ 1/4
X?
÷?
X?
1/3
12
÷?
X 1/3
X?
÷?
1/12
Contributed by Maria Veselova-Smith
2/3
4/3
Sheet C:
What operations can you do to
the number in the centre to
get the numbers in the small
circles?
2/√3
4/3
64/27
0
1
1/6
3
1½
3/4
Sheet D:
What operations can you do to
the number in the centre to
get the numbers in the small
circles?
9/16
3/4
27/64
0
1
1/2
3
Contributed by Maria Veselova-Smith
Answers:
Sheet A
2
÷5
X 1/5
÷ 2/5 or
÷ 0.4
X2
10
25
X 2.5
or
X 5/2
20
÷ 1/2
X 1/20
÷ 20
1/2
Answers:
Sheet B
4/3
÷ 1/4
X?
÷3
X 36
1/3
1/9
12
÷
1/36
X 1/3
X2
÷ 1/2
2/3
Contributed by Maria Veselova-Smith
X2
÷1/2
-2/3
Answers (but
exhaustive):
Sheet C
2/3
X 1 or
+0
or
+28/27
4/3
2/√3
4/3
64/27
0
X0
-4/3
1
1/6
3
X 3/4 or
÷ 4/3 or
+5/3
-7/6 or
÷8
X 3/4 or
÷ 4/3 or
-1/3
X 1/2 or
÷ 2 or
+3/4
1½
Answers (but not
exhaustive):
X 1 or
÷ 1 or
+0 or 3/4
-0
or
Sheet D
9/16
3/4
27/64
- 3/16
1
X 4/3 or
÷ ¾ or
+1/4
-27/64
0
1/2
X 0 or
-3/4
X 2/3 or
-1/4
3
X 4 or
+9/4
Contributed by Maria Veselova-Smith