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500 words, grade one, math diary.
Today, when my mother was washing clothes, I counted: there were two dark ones; light colour

There are 2 pieces; Brown 4 pieces; 2 pieces of blue, I use 2+2+4+2= 10, a * * *

The clothes are 10. Mom is really hard!

Today, my father and I weighed together. Father's weight 120 kg, I weigh 50 kg.

Dad is a little lighter. I use 120-50 = 70 (Jin) to calculate that I am 70 Jin lighter than my father.

Dad said to eat more when eating, not picky about food, and when he grows up, he can be as strong as him!

Today, the weather is exceptionally good. Grandpa took me to a busy market. Oh! There are so many people. Grandpa first bought some apples and spent 9 yuan, and then bought some big pears 10. I squinted and calculated, alas, I couldn't figure it out. Grandpa told me: "9 plus 10 equals 19." Oh, I remember, 9 plus 10 equals 19. It suddenly occurred to me that the teacher said that the position of the addend in the addition formula should be changed, and it could not be changed. So, I said to my grandfather, "10 plus 9 is also equal to 19." Grandpa praised me for being smart, and I was very happy.

On the way to school, I saw a shop open. There are two atmospheric flowers hanging on both sides of the shop. There are 12 big red flowers in the middle door, which are made of red silk. Very beautiful. On both sides of the building, from top to bottom, there are also 29 colored cloth strips with four big characters, "Business is booming". I calculated that 2 plus 12 plus 29 equals 43. I'm glad I can work out the formula of continuous addition.

I went to learn English today and learned the phonetic symbols of letters. There are 5 open syllables and 2 closed syllables1syllable. The teacher asked, * * *, how many letters are there? I think 5 plus 2 1 equals 26, so I raised my hand to answer. The teacher said, "Your answer is the fastest and most correct." The teacher rewarded me with a small diary, and I was so happy.

Today, after school, my mother and I went to make cakes together. My uncle who made the cake asked me, "What do you belong to, little friend?" I said, "It's a cow." Uncle said, "You must have had your eighth birthday." I asked my uncle, "How do you know?" Uncle smiled and said: "I am also a scalper, two rounds older than you." Guess how old I am? " My mother reminded me that the first round was 12 years old, and I quickly figured out my uncle's age was 32 years old. My uncle asked me how I knew, and I said, "Because 12 plus 12 plus 8 equals 32 yo." My uncle and mother both smiled with satisfaction.

Today, the weather is very good. My parents and I went to Suichang Children's Park to play. The park is too noisy! I saw 19 people climbing stairs and 4 people swinging. I counted, 19+4 = 23 (person). Seeing how happy they are, I really want to play.