找规律,写算式.
|
1 +2=3 |
|
4 +5+6=7+8 |
|
9 +10+11+12=13+14+15 |
|
16 +17+18+19+20=21+22+23+24 |
|
_______________=_________________ |
把
|
①□÷ 2+3=6 |
② 2×□+□=10 |
|
③□×□+ 3=27 |
④ (□-8)×5=5 |
|
⑤ (□+2)÷6=□ |
⑥ (□-□)×2=10 |
找规律,写算式.
|
1 +2=3 |
|
4 +5+6=7+8 |
|
9 +10+11+12=13+14+15 |
|
16 +17+18+19+20=21+22+23+24 |
|
_______________=_________________ |
把
|
①□÷ 2+3=6 |
② 2×□+□=10 |
|
③□×□+ 3=27 |
④ (□-8)×5=5 |
|
⑤ (□+2)÷6=□ |
⑥ (□-□)×2=10 |