4.4 Listening for Numbers, Dates, and Decisions — Traps and Strategies

4.4 Listening for Numbers, Dates, and Decisions — Traps and Strategies

Numbers, dates, and decisions are the most quantifiable content in BJT audio and the most trap-prone. A single mis-heard digit can flip your answer. This section itemises the patterns the test uses and the note-taking discipline that defends against them.

Number Patterns in BJT Audio

BJT audio mentions numbers constantly: 納期, 予算, 売上, 割合, 増減率. Recognise these patterns by ear:

• 円 units: 円, 万円, 千円, 億円 (1億円 = 100 million yen)
• 割: 1割 = 10%, 3割 = 30%, 8割引 = 20% remaining or 80% discount (confirm context)
• パーセント／%
• 倍／分の一: 2倍, 半分, 3分の1
• 増減率: 対前年同期比, 前年比, 前期比

Practise distinguishing 万 (10,000) from 億 (100,000,000) and 千 (1,000) from 万. The most common unit error is mistaking 万円 for 億円 or vice versa.

Date Patterns

• 〇月〇日 (notice the 14日 vs 40日 trap)
• 週末, 締め切り, 納期, 開催日, 開場時間, 開始時刻, 終了時刻
• 予定 vs 実績 — a dialogue often mentions both; only one is the answer

Time Patterns

• 午前／午後, 24-hour clock at BJT
• 朝礼 9:00, 終業 17:30, 休憩, 時差出勤, リモート勤務時間帯

Time is often mentioned alongside a date; trap options swap the time of one event with the date of another.

Schedule Conflict Patterns

• 予定が入っている
• 先約があります
• 調整がつかない
• 前後する
• 順延
• 予約をダブルブッキング

Schedule conflicts usually drive a 次の行動 question; the answer is the proposed resolution (e.g., 順延にする, 別の日程に振り替える, 上司に相談する).

Decision-Signal Phrases

• 〇〇に決定
• 〇〇でいきましょう
• 保留にする
• 見送る
• ペンディング
• 後日
• 改めて
• そのまま進める

Decisions may be unconditional, conditional, or deferred. The correct option must match the decision's modality.

Trap Patterns

The 訂正 trap is the most dangerous because the first-mentioned number is the one you are most likely to write down. Listen until the speaker closes the topic before finalising your note.

Note-Taking Strategy

Before audio starts, draw a four-column table:

For numbers specifically, add a four-column sub-grid:

This forces you to capture context, not just the digit. A bare 14 in your notes is useless; 14日／田中部長／納期 is answerable.

Number Dictation Practice

Listen and write:

• 3,500万円 → 3,500万円 (not 350万円)
• 1割5分引き → 15% discount
• 対前年同期比12%増 → 12% year-on-year increase
• 納期は9月14日 → 9月14日 (not 9月40日)
• 予定は3億円、実績は2億8千万円 → both captured separately

Conditional Decision Example

Consider a dialogue: 部長 says 予算が3,000万円以上なら今期中に着手しよう。それ以下なら来年度に見送る.

Answer to 「いつ着手するか」: 見込みによっては今期中、さもなくば来年度 — i.e., conditional. A trap option will say only 今期中 or only 来年度. The correct option must preserve the conditional structure.

Self-Correction Signals

Speakers often correct themselves mid-sentence. Listen for:

• いや、やっぱり…
• 訂正します
• 失礼、〇〇ではなく…
• あ、間違えました

The corrected value is always the one that counts. If you wrote the first value, strike it through and write the corrected one — do not erase, in case the speaker re-corrects.

Combining Number and Decision Traps

The hardest BJT items combine a 訂正 number trap with a conditional decision trap. Example:

Consider a dialogue: 課長 says 予算は5,000万円にしましょう...いや、やっぱり3,000万円で。ただ、3,000万円を超える実績が出れば、今期中に増額して再着手します.

What is the budget and when is the project started?

• Budget: 3,000万円 (corrected from 5,000万円).
• Start: conditional — 増額 occurs only if 実績 exceeds 3,000万円; otherwise the project continues at the 3,000万円 baseline.

A trap option says: 予算5,000万円で今期中に着手 (uses the rejected number and ignores the conditional). The correct option says: 予算3,000万円、実績次第で増額・再着手 (preserves both the correction and the conditional). Items like this demand that you keep both the 訂正 column and the 条件 column in your note grid active simultaneously.

Date and Name Substitution Traps

A frequent trap pairs a date with a name and swaps the pairing in the option:

Consider a dialogue: 山本部長は15日に田中課長と商談の予定でしたが、17日に変更になりました.

Trap option: 田中部長は15日に商談 (wrong: 田中 is 課長, not 部長, and 15日 is the original date, not the changed date). Correct option: 商談は17日に変更された.

Note the two-layer trap: the rank label (部長 vs 課長) and the date (15日 vs 17日). Capturing 誰の in your note grid exposes both layers. A bare 15 in your notes is ambiguous; 山本部長／15日／原本 and 商談／17日／変更 is unambiguous.

Unit Traps Across 円, 割, and パーセント

Unit-substitution traps swap 円 for 万円, % for 割, or 倍 for 分の一. Example:

Consider a dialogue: 売上は対前年同期比2割増、つまり20%アップです.

Trap option: 売上は2%増 (confuses 割 with %). Correct option: 売上は20%増 (recognises 2割 = 20%). The trap exploits the moment of cognitive translation between Japanese unit systems.

Listening Posture for Number Items

During number-heavy dialogues, adopt a focused listening posture:

1. Pen on paper before audio starts, four-column number grid already drawn.
2. Eyes on the illustration to detect any visible numbers (clocks, schedules, whiteboards).
3. Head still, no looking up while writing — keep your hand moving in the grid.
4. Wait for the speaker to close the topic (signaled by a turn-taking particle such as はい, ええ, or a new speaker) before finalising the entry.
5. On 訂正, strike through (do not erase) and write the corrected value beside.

Speed Drill

Practise number dictation at native speed. Use JLPT N1 listening materials or shadowing tracks; pause every 10 seconds and write what you heard. Compare against the transcript. Drilling 15 minutes per day for two weeks typically reduces digit-confusion errors by half. Pair the drill with the four-column note-taking grid so the muscle memory of writing context (単位, 誰の, 何の) accompanies every digit you capture.

Final Drill Recommendation

In the week before the test, alternate daily drills:

• Day 1-3: Number dictation (15 minutes), focusing on 万/億/千 and 14 vs 40.
• Day 4-5: Conditional decision dictation, capturing 条件 column.
• Day 6: 訂正 drills, training yourself not to finalise a note until the speaker closes the topic.
• Day 7: Mixed drills under timed conditions, using the full four-column grid.