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Maths · Grade 2 · Set B
Ten tens make a hundred
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B
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Remember: Ten tens make a hundred. Each digit says how many of its place: hundreds, tens and ones.

Read the blocks

A flat is 100. A rod is 10. A cube is 1.

1
A flat is 100. What number do the blocks show?
2
Count the flats and then the cubes. What number is it?
3
Ten rods make a flat. 16 rods are worth .
4
What number do the blocks show?
327732372
5
Which blocks show 450?
A
B
C
6
Ten rods make a flat. What number do the blocks show?
7
Trade ten rods for a flat in your head. What number do the blocks show?
8
The blocks show 360.
TrueFalse
9
Look at 836. What digit is in the hundreds place?
10
Join each set of places to its number.
  1. 15 hundreds 0 tens 3 ones
  2. 25 hundreds 3 tens 0 ones
  3. 33 hundreds 5 tens 0 ones
  • A530
  • B503
  • C350
11
Write the number: 6 hundreds, 0 tens and 7 ones.
12
Put the numbers in order. Smallest first.
  • 74
  • 470
  • 407
13
Draw flats, rods and cubes to show 132.
14
Why does 407 need a zero? Write one sentence.
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Answer key · Set B
Ten tens make a hundred
1600 6 flats count 100, 200, 300, 400, 500, 600.
2405 4 flats make 400. No rods. 5 cubes make 5. That is 405.
3160 10 rods make 100. 6 more rods make 60. That is 160.
4372 3 flats are 300, 7 rods are 70 and 2 cubes are 2. That is 372.
5A 450 is 4 hundreds, 5 tens and 0 ones. Blocks A have 4 flats, 5 rods and no cubes.
6337 10 rods make another flat, so there are 3 flats and 3 rods left, with 7 cubes. That is 337.
7242 10 rods make a flat, so 2 flats and 4 rods are left, with 2 cubes. That is 242.
8False There are 3 flats, no rods and 6 cubes. That is 306. The zero holds the tens place.
98 The 8 is first. It says 8 hundreds.
101-B, 2-A, 3-C
11607 An empty tens place still needs a zero: 607.
121, 3, 2 74 has no hundreds. 407 and 470 both have 4 hundreds, and 407 has fewer tens.
14Your own words: a grown-up reads it.
Mark each answer, count the right ones and write the score on the sheet.