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Back to Lesson 15 All extra practice

Numbers 20–100

Optional support — your core lesson stays exactly as it is.

🧩 Supplementary Practice

Extra practice — Numbers 20–100

Need the words to stick? Recognise, recall, then use them.

Extra support for language you've already met.

Step 1 · Let's Understand

Bigger numbers — words & phrases

Recognise it, remember it, then use it.

Recognise the meaning

Recognise

Match each word with its meaning.

twenty
thirty
forty
fifty
sixty
seventy
eighty
ninety

Answer, then check.

Words in real phrases

Chunks

Say each one aloud. Copy the rhythm.

I am twenty years old.

twenty

It costs thirty pounds.

thirty

My dad is forty.

forty

Fifty people are here.

fifty

Sixty minutes in an hour.

sixty

Can you remember?

Recall

Say the word first, then check.

Use it

Use it

Write 3 sentences about you using words from bigger numbers.

Step 2 · Let's Practise

Extra speaking practice

Model first, then say it yourself.

Model language

Chunks

Listen, then say each phrase twice.

How old are you?

I'm ___ years old.

What's your phone number?

It's ___ .

How much is it?

It's ___ pounds / euros.

Guided speaking

Speak

Pairs: ask and answer about age, phone number, address, and prices of 3 things in your bag.

  • Use: "How old are you?"
  • Use: "I'm ___ years old."
  • Use: "What's your phone number?"
  • Use: "It's ___ ."

Model answer

I am twenty-six years old. My mother is fifty-two. My new shoes cost forty-five pounds. I live at number seventy-eight.

Complete the conversation

Practise

Choose the natural reply.

  1. B: …

  2. B: …

  3. B: …

Answer, then check.

Challenge

Speak

Now do it again with no notes. Speak for 60 seconds.

  • Talk about bigger numbers without stopping.

Step 2 · Let's Practise

Common difficulties

The parts learners usually find hard in this lesson.

Pronunciation: 13 vs 30, 14 vs 40 — the tricky pairs

Chunks

thirTEEN (stress END) vs THIRty (stress START). The ending -ty sounds like 'tee' /ti/ — never 'tie'. So THIR-tee, FOR-tee, FIF-tee.

thir-TEEN ↔ THIR-tee (-ty = /ti/)

four-TEEN ↔ FOR-tee

fif-TEEN ↔ FIF-tee

six-TEEN ↔ SIX-tee

seven-TEEN ↔ SEV-en-tee

Tricky ones — say it, then check

Recall

These are the parts beginners often get wrong.

Common difficulties

Practise

Slow down and choose carefully.

  1. 30 = ___

  2. 50 = ___

Answer, then check.

Step 3 · Let's Use It

Big numbers: tens + ones

Strengthen the grammar from this lesson — a different route into it.

Quick explanation

Understand

Tens: 20, 30, 40, 50, 60, 70, 80, 90, 100. In-between: tens + hyphen + ones. 21 = twenty-one. 47 = forty-seven.

  • 21 → twenty-one
  • 35 → thirty-five
  • 48 → forty-eight

Notice the pattern

Notice

Read the sentences. What is the same in each one?

  • 21 → twenty-one
  • 35 → thirty-five
  • 48 → forty-eight
  • 72 → seventy-two

Choose the right form

Practise

One answer only. Take your time.

  1. How do you say 42?

  2. How do you say 60?

  3. How do you say 75?

  4. How do you say 100?

Answer, then check.

Fix the mistake

Common mistakes

Each sentence has one wrong word. Write it correctly.

My grandfather is seventeen years old. (70)

The book costs two-five pounds. (25)

There are thirteen-two students in the class. (32)

Build the sentence

Build it

Put the words in the right order.

Iamthirty-fiveyearsold.
Thepriceisninetypounds.
Myphonenumberisoh-seven-seven-three.

Answer, then check.

Make it yours

Use it

Write 2–3 true sentences about you using big numbers: tens + ones.

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