\(189+11+500+200\)
\(=200+500+200\)
\(=200.2+500\)
\(=400+500\)
\(=900\)
189+11+500+200
=(189+11)+(500+200)
=200+700
=900
tk nhé
\(189+11+500+200\)
\(=200+500+200\)
\(=200.2+500\)
\(=400+500\)
\(=900\)
189+11+500+200
=(189+11)+(500+200)
=200+700
=900
tk nhé
Tính nhẩm:
5200 + 400 =
6300 + 500 =
8600 + 200 =
5600 – 400 =
6800 – 500 =
8800 – 200 =
100+100+200+200+300+300+400+400+500+500+600+600+700+700+800+800+900+900+?
500 + x = 100 + 500
300 - x = 300 + 200
400 - x = 200 + 400
Số?
500 đồng = 200 đồng + ….đồng
500 đồng = 400 đồng +…đồng
500 đồng = …đồng + 500 đồng
1. Tính nhẩm :
a) 5200 + 400 = 6300 + 500 = 8600 + 200 =
5600 - 400 = 6800 - 500 = 8800 - 200 =
b) 4000 + 3000 = 6000 + 4000 = 9000 + 1000 =
7000 - 4000 = 10000 - 6000 = 10000 - 9000 =
7000 - 3000 = 10000 - 4000 = 10000 - 1000 =
x + 200 = 500 + 500
x + 500 = 500 + 200
x + 200 = 500 + 200
1000:500*200+300*400+500