Once upon a sunny day, at the lively carnival grounds, Ajit, Tom, and Joy found themselves at a colorful stall filled with delicious toffees. Joy's eager hands quickly grabbed two toffees, sparking a guessing game among the friends. Curious and excited, they wondered about the total number of toffees hidden within the boxes, starting a sweet adventure of counting and discovery.
1. Joy is hopping on the tiles at the fair. Can you guess the missing numbers below:
Have you tried guessing the numbers yet? If not, that's okay! The missing numbers have been given below for you:
2. Imagine there are some ants on the ground that found some food. Can you guess how many ants there might be? After making a guess, let's count them together to see if our guess was correct.
Hint:
Well done! You've guessed the right number. So, the total number of ants are 127.
Imagine you have big bundles of matchsticks as shown in the picture below. Each big bundle has 10 smaller bundles inside. Each of these smaller bundles has 10 matchsticks.
So, to find out how many matchsticks are in one big bundle, we multiply: 10 (small bundles) x 10 (matchsticks in each small bundle) = 100 matchsticks in one big bundle.
But wait! We have two big bundles, so we multiply 100 (matchsticks in one big bundle) x 2 (big bundles) = 200 matchsticks in total from the big bundles.
Now, we have 3 small bundles left over along with 5 matchsticks extra.
Each of these small bundles has 10 matchsticks, so we multiply: 3 (extra small bundles) x 10 (matchsticks in each small bundle)
= 30 matchsticks in total from the extra small bundles + 5 matchsticks extra
= 35 matchsticks So, all together, we have 200 matchsticks from the big bundles and 35 matchsticks from the small bundles and extra matchsticks , making a total of 235 matchsticks.
Number Sentence for number 235 can be written in the following ways:
Once upon a time, there were five friends named Jack, Lily, Ben, Mia, and Sam. They were all going on a camping trip together.
So, by adding more or taking away some, the number of things they had changed during their camping adventure!
Now, Let's play with numbers! We'll learn how to increase or decrease them.
(i) 285 – increase the number by one
Sol: Here, we've to make the number bigger by adding one i.e. 285+1. We'll get 286.
(ii) 147 – increase the number by ten
Sol: Here, we've to make the number bigger by adding ten i.e. 147+10. We'll get 148.
(iii) 367 – decrease the number by 2
Sol: Here, we've to make the number a bit smaller by taking away 2. which means 3672. We'll get 365.
(iv) 289 – decrease the number by 10
Sol: Here, we've to make the number a bit smaller by taking away 10. which means 28910. We'll get 279.
(v) 290 – increase the number by 20
Sol: Here, we've to make the number bigger by adding 20 i.e. 290+20. We'll get 310.
Yay! You've learnt how to make numbers bigger and smaller. Well done.
Counting the number of letters in the names of numbers is a fun way to learn about both counting and numbers themselves. Here's how you can do it:
Writing Numbers in Sentences
Let's look at some examples:
(i) 256: This is read as "two hundred fiftysix."
(ii) 378: This is read as "three hundred seventyeight."
(iii) 429: This is read as "four hundred twentynine."
They agreed that each of their names was unique and special. They were happy to learn how to count the letters in their names.
A number line is like a road where numbers go for a walk! It's a line where we put numbers in order from smallest to biggest, just like when we line up for lunch.
Imagine you're standing at one end of the number line. As you walk along it, you'll see numbers getting bigger and bigger. If you go the other way, numbers get smaller and smaller.
Counting on a number line is like taking steps. Let's say we want to count from 100 to 110. We start at 101, then take a step to 102, then 103, then 104, and finally we'll reach 110 by continuing in the same manner. Each step we take brings us closer to the next number.
So, number lines help us see how numbers are arranged and how we can move between them by taking steps. It's like walking along a path of numbers, one step at a time
So, when we put all these values together, we get 700 (from 7 hundreds), plus 40 (from 4 tens), plus 3 (from 3 ones), which equals 743.
There are 5 members in the Dubey family— Mr. Dubey, Ms. Dubey, Tina, Rahul, and their pet Rocky.They are standing heightwise from the tallest to the shortest (in descending order) in picture 1 and from the shortest to the tallest (in ascending order) in picture 2.
In case of numbers:
For example: The numbers 2, 4, 5, 8, and 9 are in ascending order whereas 9, 8, 5, 4, and 2 are in descending order.
Edurev Tips: Numbers get “bigger/greater” when counting forward and “smaller/ lesser” when counting backwards.
Examples:
(i) Digits: 3, 7, 2
Greatest 3digit Number: 732 (Descending order: 7 > 3 > 2)
Smallest 3digit Number: 237 (Ascending order: 2 < 3 < 7)
(ii) Digits: 5, 6, 2
Greatest Number: 652 (Descending order: 6 > 5 > 2)
Smallest Number: 256 (Ascending order: 2 < 5 < 6)
6 videos68 docs18 tests

1. How can students practice writing number sentences? 
2. How can students have fun while learning about numbers going up and down? 
3. How can students practice counting the number of letters in number names? 
4. How can students understand place value effectively? 
5. How can students compare numbers to determine their relative values? 

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