Each problem gives the variable a value and then an expression built on it: n = 9, then 4n ÷ 4. The student substitutes, then works it out. There is nothing to solve for - the letter's value is stated - which makes this the gentler half of beginning algebra and a sensible place to start before one-step equations.
Every expression is two operations at most and every result is a whole number, never negative, with divisions that come out even. The operator buttons choose which operation follows the term, so you can hold a sheet to addition while substitution itself is the new thing.
Put the given number in place of the letter and work out what the expression comes to. If n = 9, then 4n ÷ 4 is 36 ÷ 4, which is 9.
Four times n. The multiplication sign is left out once a letter is involved. Students who read 4n as a two-digit number rather than a multiplication are making the mistake these sheets are meant to catch early.
Yes, for the term itself: in 4n - 7 the multiplication happens before the subtraction. The expressions are short enough that this is one decision rather than a chain - our order of operations worksheets are the place for longer ones.
Never. The subtraction is always drawn from inside the term and the divisions always divide exactly, so a student who has not met negative numbers or remainders will not run into either here.