In the material I'm studying, it says the following;
1. A number sequence is when addition is written horizontally.
2. A number sentence is when subtraction and multiplication are written horizontally.
Is this really specific to addition, subtraction and multiplication, or can they all be interchanged?
Could I say that, 2 + 4 = 6 is a number sentence and that 4 x 5 = 20 is a number sequence?