Hi-YAH! Welcome to the Number Dojo, young ninja! 👋

I'm Numi the Number Ninja, and I'm going to train you in the FOUR secret arts of numbers! 🔢

Every great ninja needs sharp maths skills. Today you'll learn:

🏯 Place Value — what each digit is worth

⚔️ Addition & Subtraction — fast mental tricks

🌀 Multiplication & Division — times tables power

💰 Money — Aussie coins and notes!

Each skill you master earns you a ninja belt! Ready to train? Let's go! 🥋

In the Number Dojo, the FIRST secret is Place Value! 🏯

Every digit in a number has a position, and that position tells you its VALUE!

Look at the number 3,472:

🔹 3 is in the Thousands place → worth 3,000

🔹 4 is in the Hundreds place → worth 400

🔹 7 is in the Tens place → worth 70

🔹 2 is in the Ones place → worth 2

So 3,472 = 3,000 + 400 + 70 + 2

This is called expanded form! 💪

A ninja always knows which number is bigger or smaller! 🐊

We use these special symbols:

🔹 > means greater than (the big mouth eats the bigger number!)

🔹 < means less than

🔹 = means equal to

Example: 4,526 > 3,981 ✅

Rounding makes numbers simpler! Look at the digit to the RIGHT of the one you're rounding:

🔹 If it's 0–4 → round DOWN

🔹 If it's 5–9 → round UP

Example: Round 367 to the nearest hundred → look at the 6 (tens) → 6 ≥ 5 → round UP → 400! 🎯

Subtraction is the REVERSE ninja move! Take away, find the difference, or find what's missing! ⚔️

Strategy 1: Count Back

🔹 72 − 5 → count back: 71, 70, 69, 68, 67 ✅

Strategy 2: Jump Back

🔹 85 − 32 → jump back 30: 55, then − 2 = 53

Strategy 3: Add Up (Shopkeeper's Method!)

🔹 "What's 100 − 67?" → start at 67, add up to 100: 67 + 3 = 70, + 30 = 100 → answer is 33!

Word Problem Tip: Look for clue words!

➕ Add: altogether, total, in all, combined, sum

➖ Subtract: left over, remaining, difference, fewer, less than

Multiplication is just FAST adding — groups of the same number! 🌀

3 × 4 means "3 groups of 4" = 4 + 4 + 4 = 12

Numi's times table tricks:

🔹 ×2 = just double it! (7 × 2 = 14)

🔹 ×5 = count by 5s: 5, 10, 15, 20...

🔹 ×10 = add a zero! (6 × 10 = 60)

🔹 ×9 = the finger trick! Hold up 10 fingers. Put down finger #4 for 9 × 4. Count: 3 fingers left, gap, 6 fingers right = 36! 🖐️

🔹 ×4 = double then double again! (6 × 4 = 6×2=12, then 12×2 = 24)

Remember: order doesn't matter! 3 × 7 = 7 × 3 = 21

Division is the opposite of multiplication! It means sharing equally or making groups. ÷

Sharing: 12 ÷ 3 = "Share 12 among 3 people" → each gets 4

Grouping: 12 ÷ 3 = "How many groups of 3 in 12?" → 4 groups

The ninja shortcut? Use your times tables BACKWARDS! 🔄

🔹 24 ÷ 6 = ? → Think: "6 × ? = 24" → 6 × 4 = 24 → answer is 4!

🔹 45 ÷ 9 = ? → Think: "9 × ? = 45" → 9 × 5 = 45 → answer is 5!

Remainders: Sometimes it doesn't divide evenly!

🔹 14 ÷ 3 = 4 remainder 2 (because 3 × 4 = 12, and 14 − 12 = 2 left over)

Time to master Australian money! A ninja always knows the value of their coins! 💰

🪙 Coins:

🔹 5c (small, round, silver)

🔹 10c (larger, round, silver)

🔹 20c (12-sided, silver)

🔹 50c (big 12-sided, silver)

🔹 $1 (small, gold)

🔹 $2 (tiny, gold — smaller than $1!)

💵 Notes: $5, $10, $20, $50, $100

Tricky! Australia has NO 1c or 2c coins — prices get rounded to the nearest 5c when paying cash!

To add money, start with the biggest and count on! 💰

Example: $2 + $1 + 50c + 20c + 5c

→ $2 ... $3 ... $3.50 ... $3.70 ... $3.75 ✅

Giving Change — use the "count up" method!

You buy something for $3.40 and pay with $5.00.

🔹 Start at $3.40

🔹 +10c = $3.50

🔹 +50c = $4.00

🔹 +$1 = $5.00 ✅

Change = 10c + 50c + $1 = $1.60!

Top tip: Always write money with 2 decimal places! $3.40 not $3.4 ✍️