Dùng từ gợi ý viết câu hoàn chỉnh - I / want / eggs / for / breakfast. ................................................................ - she/need/tomatoes/make/fruit salad. ................................................................... - you/want/milk/or/smoothie? ..................................................... -they/not want/popcorn. ............................................... -he/not need/ chocolate. ............................................... - we / sometimes/ have / rice / soup / breakfast. ....................................................................................... - your mother / want / potatoes / make / soup? ....................................................................................... -I/ not like/ beef / fish. ......................................................... -what/ need/ make/ smoothie? .......................................................... -Mary/ not have got / pepers. ........................................................
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![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(4\times378\times25\)
\(=\left(25\times4\right)\times378\)
\(=100\times378\)
\(=37800\)
b) \(214\times53-214\times45\)
\(=214\times\left(53-45\right)\)
\(=214\times8\)
\(=1712\)
a) \(4\times378\times25\)
\(=4\times25\times378\)
\(=100\times378\)
\(=37800\)
b) \(214\times53-214\times45\)
\(=214\times\left(53-45\right)\)
\(=214\times8\)
\(=1712\) ( Thuận tiện chỗ nào? )
![](https://rs.olm.vn/images/avt/0.png?1311)
4x378x25 214x53 -214x43
tính bằng cách thuận tiện nhất
![](https://rs.olm.vn/images/avt/0.png?1311)
\(1+1+100000+1+1+1+1+9+999+1+1000+111+77+99+1\)
\(=\left(999+1\right)+\left(99+1\right)+\left(9+1\right)+100000+\left(1+1+1+1+1\right)+77+111\)
\(=1000+100+10+5+77+111+100000\)
\(=1110+5+188+100000\)
\(=101110+5+188\)
\(=101115+188\)
\(=101303\)
![](https://rs.olm.vn/images/avt/0.png?1311)
11111111111111111111111111111111111111111111-2222222222112223ew2aw
![](https://rs.olm.vn/images/avt/0.png?1311)
Chia hết cho cả 2 và 5 nên sẽ chia hết cho 10
Vì nhỏ hơn 30 và lớn hơn 12 lại chia hết cho 10 nên Lan có 20 cái bánh
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Đổi 1 tạ 50kg = 150kg
Cả 2 ngày cửa hàng bán được :
500 + 150 = 650(kg)
1 tạ 50 kg = 150 kg
Cả hai ngày cửa hàng bán được số kg gạo là:
150 + 500 = 650 (kg)
Đáp số: 650 kg
Chúc bạn học tốt nha
Dùng từ gợi ý viết câu hoàn chỉnh
- I / want / eggs / for / breakfast. .......
.I want some eggs for breakfast.......................................................
- she/need/tomatoes/make/fruit salad.
She needs some tomatoes to make fruit salad...................................................................
- you/want/milk/or/smoothie?
Do you want some milk ore smoothie?.....................................................
-they/not want/popcorn. .....They don't want popcorn..........................................
-he/not need/ chocolate. .......He doesn't need chocolate........................................
- we / sometimes/ have / rice / soup / breakfast. ........We sometimes have rice and soup for breakfast..............................................................................
- your mother / want / potatoes / make / soup?...........Does your mother want some tomatoes to make soup?............................................................................
-I/ not like/ beef / fish. .......I don't like beef and fish..................................................
-what/ need/ make/ smoothie? ............What do you need to make some smoothie?..............................................
-Mary/ not have got / pepers. ..........Mary hasn't got any peppers..............................................