8.1 Algebraic notation and vocabulary — Practise with help

1. $-5$. 2. $9$. If an answer differs, review the earlier method before continuing.

Identify the letter, coefficient and constant in the written expression.

Write $x$ three times as a sum, then name the number multiplying $x$.

Seven groups of $x$; coefficient $7$.

Identify the letter, coefficient and constant in the written expression.

Which operation combines $n$ and $5$?

$n+5$.

Identify the letter, coefficient and constant in the written expression.

Replace $x$ with $3$, then multiply before adding.

$3(3)+2=11$.

Identify the letter, coefficient and constant in the written expression.

List each part separated by a plus sign and identify the number multiplying each letter.

Terms $4a$ and $4b$; each coefficient is $4$.

Identify the letter, coefficient and constant in the written expression.

Replace $n$ with $6$ in $C=5n$, then attach the currency unit.

$C=5(6)=£30$.

Identify the letter, coefficient and constant in the written expression.

Replace $m$ with $4$ and follow the order of operations.

The expression $2m+1$ becomes $2(4)+1=9$.

Identify the letter, coefficient and constant in the written expression.

Subtract $3$ from $t$.

$t-3$.

Identify the letter, coefficient and constant in the written expression.

An equation contains an equals sign. Does this statement have one?

It is an equation because it states equality.