You measure a book and it is 30 cm long. This is the same as about: — About 1 foot.30 cm ≈ 12 inches ≈ 1 foot. A standard ruler is about 30 cm or 12 inches.
Where should you place the ruler when measuring an object? — At the 0-mark at the start of the object.Place the 0 mark at the start of the object for an accurate measurement.
An ant is 2 cm long. A caterpillar is 8 cm long. How much longer is the caterpillar? — 6 cm.8 − 2 = 6 cm. The caterpillar is 6 cm longer than the ant.
Which measurement makes sense for a river's length? — 5 kilometers.Rivers are measured in kilometers (metric) or miles (US). Centimeters and feet are way too small.
A table is 1 meter 20 centimeters long. How many centimeters is that? — 120.1 meter = 100 cm, plus 20 cm = 120 cm total.
Which US customary unit is the SMALLEST? — Inch.Inch is the smallest common US unit. 12 inches = 1 foot, and there are 3 feet in a yard.
A rope measures 2 feet 3 inches. How many inches total? — 27.2 feet = 24 inches, plus 3 inches = 27 inches total.
Which tool do you use to measure length in standard units? — Ruler or tape measure.A ruler or tape measure uses standard unit markings (cm, inches) to measure length.
A fish tank is 90 cm long. Is that more or less than 1 meter? — Less than 1 meter.90 cm < 100 cm (1 meter). The fish tank is 10 cm less than 1 meter.
A car is parked next to a basketball hoop. The hoop is about 3 meters high. The car looks about the same height as the hoop. What is a good estimate for the car's height? — 3 meters.If the car matches the 3-meter hoop height, a good estimate is about 3 meters. (Real cars are about 1.5 m, but based on the given comparison, 3 m is the answer here.)
You estimate a table is 1 meter long. You then measure it and find it is 95 cm. Was your estimate good? — Yes, 95 cm is very close to 100 cm (1 meter).A 5 cm difference on a ~1 meter object is a great estimate — less than 5% off!
A banana is about 15 cm long. A bunch of 4 bananas laid end-to-end is about: — 60 cm.4 × 15 cm = 60 cm.
Which estimate for the width of a door is most reasonable? — 90 cm.A standard door is about 90 cm (≈ 3 feet) wide. 9 cm is tiny; 9 meters is huge.
True or false: An estimate must be exactly right to be useful. — False — it just needs to be reasonable and close.An estimate just needs to be reasonable and in the right range — not exact. Exact is measuring, not estimating.
A student guesses a hallway is 200 meters long. It is actually 20 meters. Is this a good estimate? — No, it is 10 times too large.200 m is 10 times the actual length of 20 m. This is a very poor estimate.
You are choosing between 10 cm, 1 meter, or 10 meters to estimate the length of a bicycle. Which is best? — 1 meter.A bicycle is about 1.5–2 meters long, so 1 meter is the most reasonable choice.
A crayon is about 10 cm. You have a row of 7 crayons end to end. Estimate the total length. — 70 cm.7 × 10 cm = 70 cm.
Which object is closest in length to 1 foot (about 30 cm)? — A school ruler.A school ruler is exactly 30 cm, which equals about 1 foot.
You have 1 quarter, 1 dime, and 2 pennies. How many cents do you have? — 37¢.25 + 10 + 2 = 37¢.
A toy costs 45¢. You have 2 quarters. How much change do you get? — 5¢.2 quarters = 50¢. Change = 50 − 45 = 5¢.
How many quarters equal one dollar? — 4.4 × 25¢ = 100¢ = $1.00. Four quarters make one dollar.
You want to buy a sticker for 37¢. Which combination of coins works exactly? — 1 quarter + 1 dime + 2 pennies.25¢ + 10¢ + 2¢ = 37¢. ✓
What is the total of 3 quarters + 2 dimes? — 95¢.3 × 25 = 75¢, plus 2 × 10 = 20¢. Total: 95¢.
A book costs $1.25. You pay with $2.00. How much change do you receive? — 75¢.$2.00 − $1.25 = $0.75 = 75¢ change.
How many dimes equal 1 dollar? — 10.10 × 10¢ = 100¢ = $1.00. Ten dimes make one dollar.
Which coin has "In God We Trust" AND shows a building on the back (the Lincoln Memorial)? — Penny.The US penny (Lincoln cent) traditionally featured the Lincoln Memorial on its reverse.
You have 4 dimes and 3 nickels. How much do you have in total? — 55¢.4 × 10¢ = 40¢. 3 × 5¢ = 15¢. Total: 40 + 15 = 55¢.
The minute hand points at the 9. How many minutes past the hour is it? — 45.9 × 5 = 45 minutes. The 9 on the clock = 45 minutes.
The short hand is between 2 and 3. The long hand is at 4. What time is it? — 2:20.Hour: short hand between 2 and 3 → it's still 2 o'clock. Minutes: 4 × 5 = 20. Time: 2:20.
The clock shows 3:45. Where is the minute hand pointing? — At the 9.45 minutes ÷ 5 = 9. The minute hand points at the 9.
If it is 6:30, where is the minute hand? — At the 6.30 ÷ 5 = 6. The minute hand points at the 6.
"Quarter past" means how many minutes past the hour? — 15."Quarter past" = 15 minutes past. A quarter of 60 minutes = 15 minutes.
"Half past 7" means: — 7:30."Half past" = 30 minutes past. Half of 60 = 30. So half past 7 = 7:30.
The clock shows 10:55. In how many minutes will it be 11:00? — 5 minutes.From 10:55 to 11:00 is just 5 more minutes.
What is 30 minutes after 4:15? — 4:45.4:15 + 30 minutes = 4:45.
There are 60 minutes in an hour. How many 5-minute groups is that? — 12.60 ÷ 5 = 12 groups. That's why there are 12 numbers on the clock!
Bingo practice is from 5:30 to 6:00. How long does it last? — 30 minutes.From 5:30 to 6:00 is 30 minutes.
In a picture graph, each symbol = 2. A row has 4 symbols. How many total? — 8.4 symbols × 2 each = 8 total.
A bar graph shows: Pizza=8, Tacos=5, Salad=3. Which food is least popular? — Salad.Salad = 3, which is the smallest value. The shortest bar is Salad.
Favorite sports: Soccer🏃🏃🏃, Basketball🏃🏃, Swimming🏃🏃🏃🏃 (each 🏃 = 3 students). How many like swimming? — 12.4 symbols × 3 students each = 12 students like swimming.
A bar graph has bars for Monday through Friday. Tuesday's bar reaches 7. Wednesday's reaches 9. How many MORE on Wednesday than Tuesday? — 2.9 − 7 = 2 more on Wednesday than Tuesday.
The scale on a bar graph goes 0, 2, 4, 6, 8, 10. Each grid line represents: — 2.The scale increases by 2 at each grid line.
A bar graph shows 3 categories. Their bars reach 4, 6, and 10. The total for ALL categories is: — 20.4 + 6 + 10 = 20 total.
In a picture graph, if each symbol = 5 and a row has 3 symbols, the total is: — 15.3 symbols × 5 = 15.
A bar graph tracks daily rainfall: Mon=2 cm, Tue=5 cm, Wed=3 cm. What was the total rainfall for the week? — 10 cm.2 + 5 + 3 = 10 cm total rainfall.