| a | b | a + b | a - b | a × b | a : b |
| 16 | 2 | 18 | 16 | 32 | 8 |
| 20 | 12
| 32
| 7
| 250 |
|
| 13
| 12 | 25
| 1
| 10 |
|
| 4
| 2
|
|
|
|
|
16 + 2 = 18, 16 – 2 = 14, 16 × 2 = 32, 16 : 2 = 8.
20 + 12
= 32
, 20 - 12
= 7
, 20 × 12
= 20 ×
250, 20 : 12
= 20 :
=
=
.
13
+ 12 = 25
, 13
- 12 = 1
, 13
× 12 =
10, 13
: 12 =
=
=
.
4
+ 2
=
+
=
+
=
, 4
- 2
=
-
=
-
=
, 4
× 2
=
×
=
, 4
: 2
=
:
=
×
=
.