Mathematics Number Representation & Place Value Conceptual 9–10 yrs

Negative numbers in context

负数的实际应用

Description

Interpret negative numbers in context (temperature, sea level, bank balance); count forwards and backwards with positive and negative whole numbers, including through zero

Mastery Evidence

✓ Place –3, –1, 0, 2, 5 on a number line
✓ The temperature is –4°C and rises by 7 degrees — what is the new temperature?
✓ Count backwards from 3 in ones: 3, 2, 1, 0, –1, –2

Assessment Prompt

If the temperature drops to −5°C overnight and rises to 3°C by day, can your child place both on a number line and say how many degrees warmer the daytime temperature is?