Cambridge Essentials Mathematics Support 7 A3.1 Homework 1
/ A3.1 Homework 11aMatch the answer cards to the question cards.
One answer card is left over.
bWrite your own question to go with the left-over card.
2Sally and Mark worked out the answer to 10 – 4 × 2.
Mark said the answer was –2.
Sally said Mark’s answer was wrong.
aWhat mistake had Mark made?
bWhat is the correct answer?
3Work these out.
a6 + 2 × 5b(6 + 2) × 5c10 – 3 × 3
d(10 – 3) × 3e(9 + 6) ÷ 3f9 + 6 ÷ 3
g11 – (8 – 2)h14 + 8 – 12i2 × 5 × 4
j72 ÷ 8 ÷ 3k12 + (8 – 3)l12 – (8 + 3)
Cambridge Essentials Mathematics Support 7 A3.1 Homework 1
4Which expression in the box matches each set of instructions?
aI think of a number, x, and add 7 to it.bI think of a number, x, and multiply it by 7.
cI think of a number, x, divide it by 7, and then subtract 2.
dI think of a number, x, multiply it by 2, and then add 7.
eI think of a number, x, add 2 to it, and then multiply by 7.
fI think of a number, x, add 7 to it and then divide by 2.
gI think of a number, x, multiply it by 7 and then subtract 2. / 7x
7x – 2
x + 7
2x + 7
7(x + 2)
5x = 4. Find the value of each expression.
ax + 7b2xcx – 1
d9 – xe3x – 5f24 ÷ (x + 2)
gh5(x + 3)i
6p= 3 and q = 5. Find the value of each expression.
ap + qbq – pcpq
d4p – 2qep + 4qf
ghi
7Each letter stands for a number. Find the value of each letter.
ap + 4 = 7bt – 5 = 6cf × 3 = 21
dk ÷ 2 = 9em + m = 24fq + q + q = 6
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