Checking understanding of arithmetic procedures with integers and decimals | Maths

Starter quiz

Select all the integers.

3.2

32 ✓

0.32

320 ✓
Match together the pairs of numbers that have a sum of 100.

48

⇔

52 ✓

64

⇔

36 ✓

38

⇔

62 ✓

83

⇔

17 ✓

54

⇔

46 ✓

73

⇔

27 ✓
Work out: $6\times7=$ ______

'42' ✓
Work out: $76 + 59 =$ ______

'135' ✓
Select all the correct calculations.

$1.2 -0.3 = 0.9$ ✓

$0.25 + 0.35 = 0.7$

$0.6 + 0.7 = 1.3$ ✓

$1-0.35 = 0.75$

$0.32+0.68 =1$ ✓
Which of these is the same as multiplying by 5?

$\div 2 \times 10$ ✓

$\div 10 \times 2$

$\times 2 \div10$

$\times 10 \div2$ ✓

Complete the statement. In our number system we use the ______ 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9

'digits' ✓
Work out: 459 + 954 = ______

'1413' ✓
What value does the hexagon represent?

0

5 ✓

6

7
Match each operation on the left to the equivalent operations on the right.

$\times6$

⇔

$\times2 \times3$ ✓

$\div8$

⇔

$\div 2 \div 2\div 2$ ✓

$\times9$

⇔

$\times3 \times3$ ✓

$\div6$

⇔

$\div 2 \div 3$ ✓

$\div4$

⇔

$\div 2 \div 2$ ✓
Sam buys 6 boxes of chocolates. Each box costs £5.75. What is the total cost of the chocolates?

£23

£28.75

£30.50

£34.50 ✓

£51.75
Four Oak students buy a pizza together. The pizza costs £15.80. They share the cost equally. How much should each student pay? £______

'3.95' ✓

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The decimal point determines the place value of each digit.
The decimal point can help ensure that digits with the same place value are combined.
Multiplication can be made easier by considering factors.
Division can be made easier by considering equivalent calculations.

Students often omit any place holders when subtracting decimals.

Encourage all place holders to be used in all written calculations so they are not omitted when they need to be there.

Integer - An integer is any positive or negative whole number or zero. E.g. (−2), 0, 153 are all examples of integers.
Decimal form - A number is in decimal form when the decimal point is shown and there are digits to the right of the decimal point.
Digit - A digit is one of the symbols of a number system. In our number system we use the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.