You can add and subtract thousands the same way you add
and subtract
ones.
Look at the examples below.
5,000
+
3,000
=
8,000
5,000
-
3,000
=
2,000
5
+
3
=
8
5
-
3
=
2
Notice when you add 5,000 and 3,000 the answer is 8,000. When you add 5 and 3 the
answer is 8. The difference is the thousands.
You can subtract and add thousands mentally by just adding or subtracting
the first numbers.
Solve the problems below.
Remember the comma as in 1,000.
6,000
+
3,000
=
6
+
3
=
6,000
-
3,000
=
6
-
3
=
9,000
+
3,000
=
9
+
3
=
9,000
-
3,000
=
3
-
3
=
12,000
+
5,000
=
12
+
5
=
12,000
-
5,000
=
12
-
5
=
15,000
+
5,000
=
15
+
5
=
15,000
-
5,000
=
15
-
5
=
35,000
+
25,000
=
35
+
25
=
35,000
-
25,000
=
35
-
25
=
80,000
+
4,000
=
80
+
4
=
80,000
-
4,000
=
80
-
4
=
29,000
+
23,000
=
29
+
23
=
29,000
-
23,000
=
29
-
23
=
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