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Before and After Hundreds Numbers

The Ministry is migrating nzmaths content to Tāhurangi.           
Relevant and up-to-date teaching resources are being moved to Tāhūrangi (tahurangi.education.govt.nz). 
When all identified resources have been successfully moved, this website will close. We expect this to be in June 2024. 
e-ako maths, e-ako Pāngarau, and e-ako PLD 360 will continue to be available. 

For more information visit https://tahurangi.education.govt.nz/updates-to-nzmaths

Purpose:

You can help your child to say a number 1, 10, or 100 before and after a hundreds number.  

What you need:

Calculator

What to do:

Instruction: Give your child a number to enter a hundreds number on the calculator. For example, 376. Check they have entered it correctly. 
 

Hundreds

Tens

Ones

3

7

6
 
Question: What digit will we need to change to find the number 10 after 376? Check they have entered it correctly.
Answer: The 7 because it is in the tens column
Instruction: Add 10 on the calculator. Press + 10 =
 
Question: What is the number 10 after 376?
Instruction: Read the answer from the calculator. Answer = 386           
 Ask your child to make further changes to the number. For example: What number is 100 before 386?
 
Follow the same sequence to ask your child similar questions. 

What to expect your child to do:

  • To read the numbers correctly.
  • To recognise the place value of numbers in the columns e.g. in 376 the 7 is in the tens column.

Variation:

  • Try the activity by writing the number down and saying a number 1, 10, 100 before or after it without the calculator.
  • Extend the activity to include thousands numbers. 

He Kupu Māori:

tātaitai
calculator
tango (hia)
subtract
tāpiri (hia)
add
otinga
result/answer
uara tū
place value
pānui (hia)
read
mati
digit
piki ake
increase
heke iho
decrease

He Whakawhitinga Kōrero:

  • Tuhia te tau 376 (toru rau whitu tekau mā ono) ki te tātaitai. (Enter the number 376 to the calculator.)
  • Ina tāpiria te tekau, ko tēhea te mati ka hurihia? (If you add 10, which digit changes?)
  • Ka piki ake te 7 ki te 8, nā te mea koirā te mati kei te uara tū o ngā tekau. (The 7 increases to an 8 because that is the digit in the tens place value.)
  • Ina tangohia te 100, ko tēhea te mati ka hurihia? (If you subtract 100, which digit changes?)
  • Ka heke iho te 3 ki te 2, nā te mea koirā te mati e tohu ana i ngā rau. (The 3 decreases to a 2 because that is the digit showing the hundreds.)
  • Tāpirihia te 10 i te tātaitai. (Add 10 on the calculator.)
  • Pānuihia te tau i te tātaitai. (Read the number on the calculator.)

Download a file of this activity:

PDF (181KB)