 + = |  + = |  ﹣ = |  ﹣= |  ﹣ = |
1﹣ = | 1﹣ = | += |  ﹣= | |
| 400×3= | 65﹣27= | 380+470= | 16×2= |
| 1000×0= | 299×4≈ | 6×70= | 25+46= |
| 450﹣160= | 103×5≈ | 220×4= | 308×6≈ |
 + = | 1﹣ = | | |
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