Fill in the gap: You can use a known equation to form related equations. When forming a related equation you should check that both sides ______.

Given that 5 × 12 = 10 × 6, fill in the gap: 5 x 12 + 5 = 10 x 6 + ___.

Given that a = 3b, fill in the gap: 2a = ___b.

Given that a = 3b, fill in the gap: a + 3b = {{}}b.

Key Stage 3

Exploring equality

Fill in the gaps: An equation is a way to express an ______.

Use the equation r = 2w to find the value of r when w = 3.

Use the equation p = 4w to find the value of w when p = 16.

Given that r = 2w, fill in the gaps: r + r = ___ + 2w.

Given that r = 2w and p = 4w, fill in the blanks: r + p = __w.