Printing: use your browser's print (Ctrl+P / ⌘P). It comes out as exactly 4 A4 sheets (2 pieces of paper double-sided). No answers in here.
10 minutes a sheet, then stop
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NameDate
1 · A sunny day and a rainy day [science: weather]
Source 1 — the temperature in a town, every two hours (made-up numbers). 15 mm of rain fell on the rainy day.
Question 1 is already done for you
Sunny day, 10 am: what temperature?
Lines go up 2 °C each. Halfway between lines is the number in between.
The ● at 10 am is on the 20 line → 20 °C
2For the sunny day and the rainy day, write the highest and the lowest temperature.
3Someone says: "The temperature changes more during the rainy day." Is that right? Explain with numbers.
How much it changes = highest − lowest
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NameDate
2 · Water used at home [social studies: water]
Source 1
A (made-up) family of four checked the water they use in a day. Their water bill is 4,800 yen a month.
used for
toilet
bath
laundry
cooking, dishes
other
litres a day
168 L
243 L
131 L
97 L
81 L
Source 2 — water used in one day (made up)
4Round the toilet (168 L) and the laundry (131 L) to the nearest hundred.
Look at the tens: 5 to 9 goes up, 0 to 4 stays.
5Round all five to the nearest hundred and estimate the day's total. Then work out the exact total too.
6Someone says: "If all 50,000 people in the town use as much as one person in this family, home water alone is more than 100 million litres a day." Is that right?
① Per person = total ÷ 4 ② × 50,000 = × 5, then × 10,000 ③ count the zeros
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NameDate
3 · Ready for a disaster [social studies: natural disasters]
Source 1
A (made-up) town leaflet: "Drinking water: 3 L per person per day. Keep 3 days' worth."
item
water, 1 box (2 L × 6)
biscuits, 1 tin
batteries, 1 pack of 4
wind-up radio
price
448 yen
348 yen
249 yen
1,980 yen
Source 2 — shop prices (made up)
7A family of four keeps 3 days' drinking water. How many litres? How many boxes of water?
A box holds six 2 L bottles.
8Today they buy one box of water, one tin of biscuits and one pack of batteries. Round each price to the nearest hundred and estimate the cost.
9Someone says: "The estimate is 900 yen, so 1,000 yen is enough." Is it really enough? Say why.
Look: was each price rounded up, or down?
10 minutes a sheet, then stop
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