Writing equations with unknowns
Interactive practice questions
Rochelle has boxes of pears. Each box contains $19$19 pears, and there are $8$8 pears left over that didn't fit into any of the boxes. In total, she has $160$160 pears.
Let $m$m be the number of boxes of pears that Rochelle has. Fill in the blanks to make an equation in terms of $m$m.
$19\times\editable{}+8=160$19×+8=160
As part of his workout routine, Ned does $10$10 push-ups followed by $10$10 sit-ups. With a short break in between, he repeats the set of exercises $4$4 times.
Let $y$y be the total number of push-ups and sit-ups that Ned does. Fill in the blanks to make an equation.
Kenneth is a rock climber, and is scaling a cliff face. Part way up he slips, falling $4$4 m down before his harness catches him. He then continues, climbing the remaining $13$13 m to the top of the cliff. The cliff is $23$23 m tall.
Let $a$a be the height at which Kenneth slipped. Fill in the blanks to make an equation.
There are $110$110 men and $46$46 women waiting to board a train. When the train arrives, $26$26 people get on to each carriage.
Let $n$n be the number of carriages on the train. Fill in the blanks to make an equation.