Exam style questions Multiplication and Division Q1.
Two whole numbers multiply together to give an answer of 1000. Neither of the numbers contains the digit zero. What are the two numbers? .................................................................................................................................. ..................................................................................................................................
Q2.
Susan is choosing pairs of numbers from this list. 6 (a)
23
24
51
108
She multiplies two numbers together. Which two numbers should she choose to get an answer between 200 and 300? .........................................................................................................................
(b)
She divides one number by another number. What is the largest possible answer? .........................................................................................................................
Substitution Q1.
(a)
Find the value of 3x + 4y when x = 6 and y = –3 ..........................................................................................................................
(b)
Sam buys x packets of sweets. Each packet of sweets costs 22 pence. Sam pays with a £5 note. Write down an expression for the change, in pence, Sam should receive. ..........................................................................................................................
Q2.
(a)
Find the value of 3x + 5y when x = –2 and y = 4 .........................................................................................................................
(b)
Find the value of 3a2 + 5 when a = 4 .........................................................................................................................
(c)
k is an even number. Jo says that 1/2k + 1 is always even. Give an example to show that Jo is wrong. .........................................................................................................................
(d)
The letters a and b represent prime numbers. Give an example to show that a + b is not always an even number. .........................................................................................................................