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Level One > Number and Algebra

Ones and Tens

Keywords:
Achievement Objectives:

Specific Learning Outcomes:

Count up to 50 objects by grouping the objects in tens.

Description of mathematics:

Number Framework Stage 2

Required Resource Materials:
Material suitable for bundling into 10s, e.g. sticks, or beans
Arrow cards (Material Master 4-14)
Activity:

Problem: “Your job at the factory is to bundle up sweets and send them to the shops.

Each bundle has exactly 10 sweets in it. At the end of the day, you have to write down how many sweets you have packed.”

Give pairs of students about 50 items of loose material and get them to create bundles/containers of 10. Record answers for all the pairs in a table on the board or modelling book or show the answer on the arrow cards.

Many students will be able to read two-digit numbers but not realise that they represent ones and tens. This activity is designed to help them to learn this. In particular, many may not realise that “ty“ at the end of words means “tens”.

It’s important that students learn to decode words like “sixty” as six tens. You can assist  this by rubbing out the headings in the table to leave the numbers only.

Example: With loose materials, the students repeat the grouping and recording objects  in ones and tens.

Problem: “Jerry has 43 lollies, and Mark has 34 lollies. Who has more lollies?”

Record 43 and 34 on the board or modelling book. The students model both 43 and 34 with bundled materials and discuss the fact that 43 is more. Record “43 is more than 34” on the board or modelling book.

Examples: Word stories and recording for these pairs: Which number is larger: 56 or 65? 14 or 41? 25 or 52? 32 or 23? ...

To study this problem in greater depth, see Vince Wright, “The Bubblegum Machine”, Connected 2 1999.

Using Calculators

Say the forwards and backwards number word sequences in the range 0–100.

Say the forwards and backwards skip–counting sequences in the range 0–100 for twos, fives, and tens.

Say the forwards and backwards number word sequences by ones, tens, and hundreds in the range 0 – 1000.

Say the forwards and backwards whole number word sequences by ones, tens, hundreds, and thousands in the range 0–1 000 000, including finding numbers that are 10, 100, and 1 000 more or less than a given number.

Find out how many ones, tens, hundreds and thousands are in all of a whole number.

Say the number one–thousandth, one–hundredth, one–tenth, one, and ten, etc, before and after any given number.

Order fractions, decimals and percentages.

Beep

Say the forwards and backwards skip–counting sequences in the range 0–100 for twos, fives, and tens.

Recall multiplication to 10 x 10, and the corresponding division facts.

Recall groupings of twos, threes, fives, and tens that are in numbers to 100 and the resulting remainders.

Say the forwards and backwards word sequences for halves, quarters, thirds, fifths, and tenths.

Skip-counting on the Number Line

Say the forwards and backwards skip–counting sequences in the range 0–100 for twos, fives, and tens.

Say the forwards and backwards number word sequences by ones, tens, and hundreds in the range 0 – 1000.

Recall groupings of twos, threes, fives, and tens that are in numbers to 100 and the resulting remainders.

Say the forwards and backwards whole number word sequences by ones, tens, hundreds, and thousands in the range 0–1 000 000, including finding numbers that are 10, 100, and 1 000 more or less than a given number.

Say the forwards and backwards word sequences for halves, quarters, thirds, fifths, and tenths.

Say the number one–thousandth, one–hundredth, one–tenth, one, and ten, etc, before and after any given number.

More Ones and Tens

Count up to 50 objects by grouping the objects in tens.