___________
Maths
Expressions and formulae
Starter quiz
Try it
Give to class
What does the symbol
\equiv
represent in the identity
x + x + x \equiv 3x
?
There is a value for
x
which makes both sides equal.
Both sides are equivalent expressions. ✓
The left hand side does not equal the right hand side.
The identity can be solved to find the value of
x
Which of these examples show two like terms?
2x
and
0.4x
✓
x^2
and
x
5xy
and
5y
3xy
and
3yx
✓
8x
and
4
Which of these bar models represents 3 lots of the expression
2x + 1
?
Match the product of two terms with its simplified expression.
3 \times 2x
⇔
6x
✓
3 \times -2x
⇔
-6x
✓
-3 \times -x
⇔
3x
✓
x \times 2x
⇔
2x^2
✓
-x \times 2x
⇔
-2x^2
✓
-3x \times -2x
⇔
6x^2
✓
Which of these is an equivalent calculation to
44\times 12
?
(11\times 3) + (4\times 4)
(44\times 6) + (44\times 2)
(44\times 8) + (44\times 4)
✓
(40\times 10) + (4\times 2)
(44\times 10) + (44\times 2)
✓
Match each product of two terms with its simplified expression.
-x \times -x
⇔
x^2
✓
2x \times x
⇔
2x^2
✓
2x \times y
⇔
2xy
✓
-2y \times x
⇔
-2xy
✓
x \times -y
⇔
-xy
✓
+