SME
Grade 3 Science · Earth & Space Science
Weather and climate
Use this for “How much rain fell this month?” from four weeks of rain gauge readings.
Chart
12
30
8
25
Rain this month: 75 mm
This is an example. Type your own values to start a new problem.
Rain in week 1
example
Rain in week 2
example
Rain in week 3
example
Rain in week 4
example
Rain this month
calculated
Formulas
12 + 30 + 8 + 25 = 75
Rain in week 1 + rain in week 2 + rain in week 3 + rain in week 4 = rain this month
Assumptions
•
Weather is what the air is doing today: rain, wind, temperature.
•
A rain gauge measures rain in millimeters (mm) or inches.
•
Add the rain of each week to find the rain for the month.
Step-by-step
WE KNOW
Rain in week 1: 12 mm
Rain in week 2: 30 mm
Rain in week 3: 8 mm
Rain in week 4: 25 mm
FIND
rain this month
Step 1 · Find rain this month
12 + 30 + 8 + 25 = ?
Rain in week 1 + rain in week 2 + rain in week 3 + rain in week 4 = rain this month
Add up all the weeks.
1
1
2
+
3
0
+
8
+
2
5
7
5
Rain this month = 75 mm
Check
Put the numbers back in. Both sides should match.
12 + 30 + 8 + 25 = 75 ✓
Topic check
See what you know: 5 questions on this topic
New questions each time. Pass to mark it complete.
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