(a) 45 = 40 + 5
→ 4 tens and 5 ones
(b) 90 = 90 + 0
→ 9 tens and 0 ones
(c) 79 = 70 + 9
→ 7 tens and 9 ones
Write the numbers in the blue boxes and the number names in the orange boxes. One is done for you.
Ans:
Count and tick (√) the correct number.
(a)
Each big bundle has 10 pencils.
Count the big bundles: 1, 2, 3, 4, 5
→ That’s 50 pencils.
Now count the single pencils: 1, 2, 3, 4
→ That’s 4 pencils.
Add them together: 50 + 4 = 54.
So, there are 54 pencils in total.
(b)
Each big bundle has 10 pencils.
Count the big bundles: 1, 2, 3, 4, 5
→ That’s 50 pencils.
Now count the single pencils: 1, 2, 3, 4, 5, 6, 7, 8
→ That’s 8 pencils.
Add them together: 50 + 8 = 58.
So, there are 58 pencils in total.
(c)
Each big bundle has 10 pencils.
Count the big bundles: 1, 2, 3, 4, 5
→ That’s 50 pencils.
Now count the single pencils: 1, 2, 3
→ That’s 3 pencils.
Add them together: 50 + 3 = 53.
So, there are 53 pencils in total.
Write the missing numbers.
(a)
We are counting backwards from 80.
80, 79, 78, 77, 76, 75, 74, 73, 72, 71.
So, the missing numbers are: 77, 76, 75, 74, 73, 72.
(b)
We are counting forward from 71 to 80.
71, 72, 73, 74, 75, 76, 77, 78, 79, 80.
So, the missing numbers are: 73, 74, 75, 76, 77, 78, 79.
Write the number that comes:
Ans:
(a) 45 = 40 + 5
→ 4 tens and 5 ones
(b) 90 = 90 + 0
→ 9 tens and 0 ones
(c) 79 = 70 + 9
→ 7 tens and 9 ones
Compare the coloured digits to fill in the boxes using <, > or = symbols.
(i) Rearrange the given numbers in ascending order.
Ascending order means arranging numbers from the smallest to the biggest.
(a)
Let’s look at the numbers: 70, 55, 34, 81
First, find the smallest → 34
Next bigger → 55
Next bigger → 70
Biggest → 81
So, in ascending order: 34 < 55 < 70 < 81.
(b)
Numbers: 14, 96, 26, 69
Smallest → 14
Next bigger → 26
Next bigger → 69
Biggest → 96
So, in ascending order: 14 < 26 < 69 < 96.
(ii) Rearrange the given numbers in descending order.
Descending order means arranging numbers from the biggest to the smallest.
(a)
Numbers: 13, 96, 27, 68
Biggest → 96
Next smaller → 68
Next smaller → 27
Smallest → 13
So, in descending order: 96 > 68 > 27 > 13.
(b)
Numbers: 78, 12, 15, 36
Biggest → 78
Next smaller → 36
Next smaller → 15
Smallest → 12
So, in descending order: 78 > 36 > 15 > 12.
Ans:
Only one of the following statements is correct. Tick (√) the correct one.
(a) 26 can be expressed as 2 ones + 6 ones.
(b) Expanded form of 26 is 2 + 60.
(c) 26 = 2 ones + 60 ones.
(d) 26 = 20 ones + 6 ones.
Ans: (a) 26 can be expressed as 2 ones + 6 ones → Wrong, because 2 ones + 6 ones = 8, not 26.
(b) Expanded form of 26 is 2 + 60 → Wrong, because the tens and ones are mixed up here.
(c) 26 = 2 ones + 60 ones → Wrong, because that makes 62 ones.
(d) 26 = 20 ones + 6 ones → Correct, because 20 ones = 20 and 6 ones = 6, and 20 + 6 = 26.
So, the correct answer is (d) 26 = 20 ones + 6 ones.
16 videos|224 docs|23 tests
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