Number – number and place value Questions with support 1
a. Write these Roman numerals in figures. XV
XXI
XLVIII
XCIV
Write the Roman numeral in figures means write in numbers, for example, 76. Remember that C is 100, L is 50, X is 10, V is 5 and I is 1. Therefore, LXVI is 50 + 10 + 5 + 1 = 66. You also need to know that, if a letter for a smaller number is before a letter for a larger number, you have to subtract the smaller number from the larger number. Therefore:
IV is 5 – 1 = 4
IX is 10 – 1 = 9
XL is 50 – 10 = 40
XC is 100 – 10 = 90 b. The boxes show the ages of three people. Their age is written in Roman numerals. How old is each person? Write their ages in figures in the boxes. Maria
Bashir
Andrea
XXIV
XLIV
LXXVI
Write the Roman numerals in figures means write the ages in numbers, for example, 36.
2
a. What number is 1000 more than 1250? b. What number is 1000 less than 5534? c. What number is 1000 more than 3894? d. What number is 1000 less than 9900?
Remember that more than in this kind of question means add. Therefore, 1000 more than 4273 is 4273 plus 1000. 1000 more than 4273 is 5273. 1000 more than 216 is 216 plus 1000. Therefore, 1000 more than 216 is 1216. Less than in this kind of question means subtract. Therefore, 1000 less than 3752 is 3752 minus 1000. 1000 less than 3752 is 2752.
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3
Fill in the missing numbers in the table. One thousand less than
Number
One thousand more than
3456 7392 4567 In another example, 1000 less than 5387 is 5387 minus 1000. 1000 more than 5387 is 5387 plus 1000.
4
Write these numbers in order. Start with the smallest number. 5789
4563
9678
5599
2214
Smallest
Largest
When ordering numbers, it can be useful to write the numbers in columns. It may help to write the numbers in a table like this, which shows the place value of each digit.
Place value Thousands
Hundreds
Tens
Ones
Look at the thousands first. Is there a number with fewer thousands than the other numbers? This is the smallest number. Look at the thousands again. Is there a second smallest number of thousands? Are there two numbers with the same number of thousands? If there are, then look at the hundreds. Does one of the numbers have fewer hundreds than the other one? This is the next smallest number. 5
These four cars are for sale. Type of car
Price
Ford
£3457
Audi
£5950
BMW
£6125
Skoda
£3515
a. Which car has the highest price? b. Which car has the lowest price? The highest price is the largest number. The lowest price is the smallest number. 10
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6
Look at these six numbers. 6768
5432
3476
3267
7321
5243
a. Which number has three hundreds? b. Which number has six thousands? c. Which number has four tens? d. Which number has six ones?
Use your place value table again to help you.
Place value Thousands
7
Hundreds
Tens
Ones
What number are these children talking about? Write the number in the box.
It has seven tens.
It has three hundreds.
It has four ones.
It has two thousands.
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