Mental Math
Fractions, Decimals and Percent
add subtract multiply divide
Measurement and time
word problems
100
Write in figures the number -----
6009
100
Write the following fraction in simplest terms 21 ___ 63
1 __ 3
100
68 + ____ = 158
90
100
How many cm are there in half a meter?
500 cm
100
Oliver had five pounds. He bought three torches for ninety pence each. How much change did he get?
0.90 x 3 = 2.70 5-2.70 = 2.30 He had £2.30 left
200
What is half of nine pounds?
4.5
200
Find equivalent fractions with a denominator of 15 8 __ 60
2 __ 15
200
5 x ____ = 175
35
200
How many seconds are there in 5 minutes?
300 seconds
200
A regular octagon has a side length of 2cm. What is its perimeter?
8 x 2= 16 cm
300
four h is twenty. What is the value of h?
5
300
What is 30% of £86
£25.80
300
What is 149 + 137 + 158
444
300
How many vertices are there on a triangular prism?
6
300
In a class, 18 of the children are girls. A quarter of the children in the class are boys. Altogether, how many children are there in the class?
1 of 18 = 6 __ 4 18 + 6= 24 children are in the class altogether
400
Write a multiple of nine between forty and fifty
45
400
Write 45 min as a fraction of one hour and write it in simplest form.
45 __ 60 3 ___ 4
400
Approximate by rounding to the nearest whole unit 14.8 x 6.3
15 x 6= 90
400
15% of people walk less than 5 kilometers in a week. 40% of people walk 8 kilometers or more in a week. What percentage of people walk between 5km and 8km?
40 + 15= 55 100-55 = 45
400
Julie has £64. She spends 25% and saves the rest. How much does Julie spend? How much does she save?
£16- spends 64-16=48 - saves
500
Amanda got 16 ___ 20 on her math test. What percentage is this?
80%
500
Round the following numbers to the nearest ten thousand and then find the sum of the numbers. 69 862 + 30 684
70 000 + 31 000 = 110,000
500
Sally is running for charity. Her Mom promises to give her 75p for every kilometer she walks. She pays Sally £6.75 at the end of the walk. How many kilometers does Sandy walk?
9
500
4732 people attended the theatre last week, each paying £8 for a ticket. The theatre company were hoping to receive takings of £40 000. How much more or less did they take?
4732 x 8 =37 856 40 000 - 37 856 = 2 144 less than 40 000