100%
3 Unit 3
3 Unit 3
Subtraction
Topic A: Subtraction
Subtraction takes an amount away from another amount. The result of subtraction is called the difference.
The minus sign ─ means to subtract.
says nine minus three equals six or nine take away three is six The difference between 9 and 3 is 6.
Subtraction is the opposite of addition. Look at the examples:
|
5 + 4 = 9 4 + 5 = 9 |
9 – 4 = 5 9 – 5 = 4 |
8 + 3 11 |
11 ─ 3 8 |
|
|
|
3 |
11 |
|
|
|
+ 8 11 |
─ 8 3 |
Subtraction facts are a tool that you will use to do subtraction questions.
Exercise OneCheck out your subtraction facts by doing this exercise as
quickly as you can. Use your addition facts to help find the subtraction facts. Check your work using the answer key at the end of the exercise. Then, make a list of any subtraction facts you do not know or which are slow for you and practice them.
|
a)5 |
b)3 |
c)7 |
d)1 |
|
─ 4 |
─ 2 |
─ 7 |
─ 0 |
|
e)8 |
f)9 |
g)4 |
h)6 |
|
─ 2 |
─ 7 |
─ 3 |
─ 1 |
|
i)7 |
j)2 |
k)7 |
l)8 |
|
─ 2 |
─ 2 |
─ 6 |
─ 7 |
|
m)0 |
n)7 |
o)3 |
p)6 |
|
─ 0 |
─ 1 |
─ 0 |
─ 6 |
|
q)4 |
r)6 |
s)9 |
t)8 |
|
─ 2 |
─ 2 |
─ 5 |
─ 6 |
|
u)5 |
v)8 |
w)1 |
x)7 |
|
─ 3 |
─ 1 |
─ 1 |
─ 0 |
|
y)9 |
z)3 |
aa) |
2 |
bb) |
7 |
|
─ 9 |
─ 1 |
|
─ 1 |
|
─ 4 |
|
Answers to Exercise One |
|||||||||||||
|
a) |
1 |
b) |
1 |
c) |
0 |
d) |
1 |
e) |
6 |
f) |
2 |
g) |
1 |
|
h) |
5 |
i) |
5 |
j) |
0 |
k) |
1 |
l) |
1 |
m) |
0 |
n) |
6 |
|
o) |
3 |
p) |
0 |
q) |
2 |
r) |
4 |
s) |
4 |
t) |
2 |
u) |
2 |
|
v) |
7 |
w) |
0 |
x) |
7 |
y) |
0 |
z) |
2 |
aa) |
1 |
bb) |
3 |
Exercise TwoCheck out your subtraction facts by doing this exercise as
quickly as you can. Use your addition facts to help find the subtraction facts. Check your work using the answer key at the end of the exercise. Then, make a list of any subtraction facts you do not know or which are slow for you and practice them.
|
a)8 |
b)9 |
c)7 |
d)6 |
|
─ 4 |
─ 1 |
─ 5 |
─ 4 |
|
e)9 |
f)5 |
g)2 |
h)6 |
|
─ 4 |
─ 2 |
─ 0 |
─ 3 |
|
i)8 |
j)6 |
k)4 |
l)9 |
|
─ 3 |
─ 5 |
─ 4 |
─ 0 |
|
m)7 |
n)5 |
o)9 |
p)3 |
|
─ 3 |
─ 5 |
─ 8 |
─ 3 |
|
q)5 |
r)9 |
s)4 |
t)8 |
|
─ 0 |
─ 2 |
─ 1 |
─ 5 |
|
u)5 |
v)9 |
w)6 |
x)8 |
|
─ 1 |
─ 3 |
─ 0 |
─ 8 |
|
y)9 |
z)4 |
aa) |
8 |
bb) |
7 |
|
─ 6 |
─ 0 |
|
─ 0 |
|
─ 4 |
|
a) |
4 |
b) |
8 |
c) |
2d) 2e) 5f) 3g) 2 |
||||||
|
h) |
3 |
i) |
5 |
j) |
1k) 0l) 9m) 4n) 0 |
||||||
|
o) |
1 |
p) |
0 |
q) |
5 |
r) |
7 |
s) |
3 |
t)3 |
u) 4 |
|
v) |
6 |
w) |
6 |
x) |
0 |
y) |
3 |
z) |
4 |
aa) 8 |
bb) 3 |
Answers to Exercise Two
Exercise ThreeCheck out your subtraction facts by doing this exercise as
quickly as you can. Use your addition facts to help find the subtraction facts. Check your work using the answer key at the end of the exercise. Then, make a list of any subtraction facts you do not know or which are slow for you – practice the.
|
a)8 |
b)5 |
c)2 |
d)4 |
|
─ 4 |
─ 5 |
─ 1 |
─ 3 |
|
e)3 |
f)6 |
g)7 |
h)9 |
|
─ 3 |
─ 3 |
─ 6 |
─ 2 |
|
i)9 |
j)5 |
k)8 |
l)4 |
|
─ 0 |
─ 4 |
─ 8 |
─ 2 |
|
m)7 |
n)2 |
o)6 |
p)9 |
|
─ 7 |
─ 0 |
─ 1 |
─