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b) 200 x 4 = .800..... 300 x 2 = ..600....
200 x 2 = .400..... 300 x 3 = ...900...
400 x 2 = ...800... 500 x 1 = ..500....
100 x 4 = ..400.... 100 x 3 = .300.....
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a) 200 mm + 100 mm = 300 mm 300 mm – 100 mm = 200 mm |
200 mm x 3 = 600 mm 600 mm : 3 = 200 mm |
b) 300 g + 200 g = 500 g | 200g x 5 = 1 000g | 500g – 300g = 200g | 1 000g : 5 = 200g |
c)
400 ml + 300 ml = 700 ml
800 ml : 4 = 200 ml
700 ml – 300 ml = 400 ml
200 ml x 4 = 800ml
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500 + x = 100 + 500
500 + x = 600
x = 600 - 500
x = 1001
300 - x = 300 + 200
300 - x = 500
x = 300 - 500
x = -200
400 - x = 200 + 400
400 - x = 600
x = 400 - 600
x = -200
k mk nha mk k l
ại ^_^
500 + 100 = 100 + 500
300 + 200 = 300 + 200
400 + 200 = 200 + 400
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![](https://rs.olm.vn/images/avt/0.png?1311)
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x + 100 = 300 - 200
x + 100 = 300 - 200
x + 100 =100
x= 100 - 100
x= 0
k nhanguynguyen thanh phuongen thanh phuong
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x + 300 = 200 x 3 - 100
=> x + 300 = 600 - 100
=> x + 300 = 500
=> x = 500 - 300
=> x = 200
vậy x = 200
x - 100 = 200 + 300
x - 100 = 500
x = 500 + 100
x = 600
x - 100 = 200 + 300
x - 100 = 500
x = 500 + 100
x= 600