302+303+304+305+306
=( )×( )
=( )
0.68+0.06=
0.01+0.1=
0.83-0.5=
5.2+0.48=
8.7-7.8=
3.5+2.4=
10.73-0.23=
6.2+5.1=
0.72-0.42=
3.6+4.8=
4.1+2.8=
1-0.75=
10-0.99=
13.7-9.9=
0.25+0.75=
4.9+5.1=
3.63-1.25=
8-4.6=
0.78-0.28=
2.3+0.4=
5.8-3.6=
3.8+0.12=
5.5-0.9=
0.52+0.4=
4.7-0.47=
2.5+3.6=
0.51+0.33=
20.9-9.7=
3.4-2.8=
1-0.6=
670+130= 100-54= 84÷2= 15×4=
40×6= 200÷4= 800×5= 69÷3=
①240×2÷6
②816÷4÷2
③(128+132)÷5
④300-129÷3
①35+65-15
②8×6-30
③42-30÷6
④19+6×5
⑤35÷(28-21)
⑥5×(28÷4)
208×41800 80×220×8 107×4440
30×902600 400×560×30 20×505×200