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Maths · Grade 4 · Set B
Big numbers in groups of three
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Remember: Read a big number in groups of three from the right: the thousands group, the word thousand, then the last three digits. A zero holds an empty place.

Read it and write it

1
The chart shows the number 5,208. Which words name it?
five hundred twenty-eightfive thousand two hundred eightyfive thousand two hundred eightfive thousand twenty-eight
2
Write the number in digits: six thousand four hundred twelve.
3
Each picture is 1,000 books. How many books does the Maple library have?
4
2,346 = 2,000 + 300 + 40 +
5
The chart shows 9 thousands, 0 hundreds, 4 tens and 6 ones. Which number is it?
9469,0469,40690,046
6
The 7 in 47,318 is worth 7,000.
TrueFalse

Bigger numbers

7
Which sign makes this true? 8,205 ___ 8,250
<>=
8
Write the number in digits: forty-three thousand nine hundred two.
9
81,040 = 80,000 + + 40
10
A stadium sold 125,300 tickets. Which words name that number?
one hundred twenty-five thousand three hundredtwelve thousand five hundred threeone hundred twenty-five thousand thirtyone thousand two hundred fifty-three hundred
11
Which sign makes this true? 540,200 ___ 54,200
<=>
12
Put the numbers in order from least to greatest.
  • 9,900
  • 19,009
  • 90,900
  • 9,090
13
706,010 is read as seven hundred six thousand ten.
TrueFalse
14
Write 405,090 in words. Tell what each zero is doing.
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Answer key · Set B
Big numbers in groups of three
1five thousand two hundred eight Say the thousands group, then thousand, then the last three digits: five thousand two hundred eight.
26412 6 goes in the thousands group and 412 in the ones group: 6,412.
36000 Count the pictures in the Maple row. 6 pictures of 1,000 books is 6,000 books.
46 2,346 has 2 thousands, 3 hundreds, 4 tens and 6 ones.
59,046 The zero holds the hundreds place, so the number is 9,046. Without it you would get 946.
6True 47,318 has 4 ten-thousands and 7 thousands, so the 7 is worth 7,000.
7< Both have 8 thousands and 2 hundreds. Compare the tens: 0 tens is less than 5 tens, so 8,205 < 8,250.
843902 The thousands group is 43 and the ones group is 902: 43,902.
91000 81,040 has 8 ten-thousands, 1 thousand and 4 tens, so the missing part is 1,000.
10one hundred twenty-five thousand three hundred The thousands group is 125 and the ones group is 300: one hundred twenty-five thousand three hundred.
11> 540,200 has 6 digits and 54,200 has 5 digits. The number with more digits is greater.
122, 3, 4, 1 9,090 and 9,900 have 4 digits, and 9,090 is smaller. Then 19,009 and 90,900 have 5 digits.
13True The thousands group is 706 and the ones group is 010, which is ten.
14Your own words: a grown-up reads it.
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