Grade 3 IMO papers
Comparative & Superlative with -er/-est
We use -er / -est with the following adjectives:
Two-syllable adjectives with the following endings:
Let’s talk about what division really is — it is repeated subtraction; much the way multiplication is repeated addition.
Let’s say I have the basic problem 16 ÷ 4. I could start with 16 and then subtract 4, subtract another 4, another 4, and another 4 until I run out and reach zero. I would have to do this 4 times. If I had 16 cookies that I wanted to share equally among 4 friends, I could do the “one for you, one for you, one for you, and one for you” process and still end up with 4 cookies for each.
But what about 375 ÷ 50? If I don’t know how to divide by double digit numbers, the repeated subtraction process might actually be a good choice . . . at least showing some number sense to know that 375 divided by 50 means “How many 50’s in 375?” I know if I subtract 50 six times, I still have 75 left. I can subtract another 50 and I have 25 left over. So 375 ÷ 50 = 7 with a remainder of 25.
Dividing using the distributive law
|69 ÷ 3||60 + 9||(60 ÷ 3) = 20
(9 ÷ 3) = 3
|20 + 3 = 23|
|391 ÷ 3||390 + 1|| (390 ÷ 3) = 130
(1 ÷ 3) = cannot be divided
|130 with Remainder 1|
Before a child is ready to learn long division, he/she has to know: Continue reading
A quick look at the Grade 1 lessons :
- It is a star.
- It gives us heat and light
- It is the main source of energy on the earth
- Eight planets and many heavenly bodies revolve around the sun.
- Orbits the sun
- Has sufficient mass to be round, or nearly round
- Is not a satellite (moon) of another object
Bird, a warm-blooded vertebrate that lays eggs and has feathers and wings.
Type of beaks
A look at the grade 2 lessons :
Animals and the way they eat
Herbivores : Animals like cows , buffaloes , sheep etc., that eat plants.
Carnivores : Animals like lions, tigers, etc., that prey on and eat other animals.
Omnivores : Animals like bears, crows etc., that eat both plants and animals.
Scavengers : Animals like vultures and jackals that eat dead and left over animals generally preyed on by carnivores.
Before starting lets take a look at the Grade 2 lessons
Responsible for reproduction
Colour and fragarence of flowers attract insects who act as pollinators.
Flower parts that we eat :
Functions of a leaf
Help in exchange of gases
Carries out photosynthesis
Apex : Tip of leaf
Base : Attaches to petiole ; if petiole is absent attaches directly to stem
Margin : Edge of leaf