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A
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d
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1
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M
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M
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C
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(
1
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M
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d
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(
1
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F
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d
q
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(
1
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1
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N
u
m
b
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s
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c
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d
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d
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(
1
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E
x
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P
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b
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(
1
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P
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(
1
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Lesson
I
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p
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g
p
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d
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(
1
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x
1
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)
A
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p
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d
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(
1
5
x
1
5
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M
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p
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d
d
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s
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g
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s
(
1
5
x
1
5
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M
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d
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(
1
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C
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m
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f
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(
1
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x
1
5
)
F
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d
q
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t
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(
1
5
x
1
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N
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c
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d
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d
p
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b
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(
1
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E
x
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U
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Stage 2
Multiplication as repeated addition (15x15)
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