Constructing and solving equations

Solve the equation: $x+3=10$   

• 13

• 7

• 103

• 310

Solve the equation: $2x+5=13$   

• 36

• 16

• 9

• 4

12 subtracted from a number gives us 8. Find the number

• 20

• 4

• 12

• 8

Find a number that is 3 times the sum of 5 and 7

• 36

• 22

• 4

• 8

"A number is 3 times the sum of 5 and 7"

What operation we should use instead of the word "sum"?

• multiplication

• addition

• division

• subtraction

"A number is 3 times the sum of 5 and 7"

What operation we should use instead of the word "times"?

• multiplication

• addition

• division

• subtraction

"A number is 3 times the sum of 5 and 7"

What symbol we should use instead of the word "is"?

• $-$

• $+$

• $\times$

• $=$

The perimeter of this triangle is 19cm. Work out the value of t. (All lengths on the picture are in cm)

• $4\frac{1}{3}$

• $\frac{14}{3}$

• $\frac{13}{2}$

• $3\frac{1}{3}$

Work out the value of x.

• 75

• 55

• 50

• 25

Work out all the angles of this triangle.

• 75; 50; 25

• 75; 55; 50

• 75; 60; 50

• 55; 50; 25