20 15 it will be fine on Friday, February 5th.

Dad asked me a question, which is heavier, a kilogram of cotton flowers or a kilogram of iron? I said, "Iron is heavy." "Why?" Dad said. I said, "No, it should be the same weight." "Wrong, in general, iron is heavy, because the density of iron is large and the volume is small, and the buoyancy is small, so iron is heavy. In a vacuum environment, it is as heavy. " Dad said.

Sixth grade math diary 100 word 2: sixth grade math diary (122 word)

June 1 1 Saturday sunny.

Today, my grandmother and I went to the store to buy daily necessities. I bought a bottle of shower gel 28 yuan first, then four pieces of soap and a piece of 3.5 yuan. When I went to check out, I calculated it. 42 yuan, I gave the cashier 100 yuan, and the cashier gave me 58 yuan.

Formula: 28+4X3.5=42 (yuan)

100-42=58 (yuan)

Sixth grade math diary 100 word three: sixth grade math diary (159 word)

September 9th, 20XX

Although the head of the decimal point is small, I know that the decimal point is not small.

For example, 3.80 yuan, without a decimal point, doesn't it become 380 yuan? 3.80 yuan is too different from 380 yuan! Don't you see how big the decimal point is in this comparison?

Many students often miss it when writing, so this number is not what you originally wanted to write. So let's not make this big mistake again!

Sixth grade math diary 100 word four: sixth grade math diary (135 word)

Wednesday, August 2nd, 20XX is fine.

I had a pair of 20 cm deep-fried dough sticks and 10 cm square cakes for breakfast today. After eating, I used a pen with a length of 1.2 decimeter to write my homework in an exercise book about 3 decimeters square. Walking out of the gate, I saw a flower 12 cm, which was in less than 19 square meters. There is also a 0.03-meter-long fish swimming around in a 20XX square centimeter pond.