Fractions And Decimals 1 ( Form 2, Mathematics)

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Quick drills on rounding, precision, and scientific notation.

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Fractions And Decimals 1 ( Form 2, Mathematics)


Froggy Jumps Fractions And Decimals 1 ( Form 2, Mathematics)Online version Quick drills on rounding, precision, and scientific notation. by YAKILI LMS 1 What is 125 rounded to the nearest ten? a 120 b 130 c 125 2 Round 6.47 to one decimal place. a 6.47 b 6.5 c 6.4 3 Estimate 128 + 73 using nearest ten. a 210 b 150 c 200 4 Round 0.849 to two decimal places. a 0.9 b 0.85 c 0.84 5 Which is round up? 2.34 to one decimal place. a 2.34 b 2.3 c 2.4 6 Estimate 0.999 to the nearest whole number. a 1 b 2 c 0 7 Round 123.456 to the nearest whole number. a 124 b 123 c 122 8 What is the significant digit of 0.00456 (3 sig figs)? a 0.456 b 0.004 c 0.00456 9 Which number has the most significant digits? 0.00340, 0.0304, 0.000304 a 0.0304 b 0.000304 c 0.00340 10 Round 15.999 to the nearest tenth. a 16 b 15.9 c 16.0 11 Estimate 49.8 ÷ 2 by rounding. a 24 b 30 c 25 12 Round down 7.081 to two decimal places. a 7.09 b 7.0 c 7.08 13 Which is rounding down? 3.456 to two decimals. a 3.46 b 3.45 c 3.4 14 What does precision refer to in a measurement? a How big the number is b Consistency of results c Number of decimals 15 Significant figures: 0.00420 has how many sig figs? a 3 b 4 c 2 16 Express 52000 in scientific notation. a 52 × 10^3 b 5.2 × 10^4 c 0.052 × 10^6 17 Which is scientific notation for 3.0 × 10^6? a 3.0 × 10^−6 b 3.0e6 c 3.0×6 18 Round 0.00086 to three significant figures. a 0.0009 b 0.00087 c 0.000860 19 A measurement is 12.3456 cm. How many sig figs if rounded to 4? a 12.3456 b 12.35 c 12.346 20 Estimate 2.97 × 10^2 to the nearest ten. a 290 b 300 c 2.97e2 21 Round 9.999 to the nearest whole number. a 10 b 9.99 c 9 22 Which value is rounded up? 0.502 to two decimals. a 0.52 b 0.50 c 0.051 23 What is the rule for rounding decimals? If next digit ≥ 5, a decrease previous digit b increase previous digit c ignore 24 Express 0.037 with three significant figures. a 0.037 b 0.0037 c 0.0370 25 Round 1234.56 to the nearest hundred. a 1200 b 1235 c 1300 26 Scientific notation for 0.0062 is: a 0.0062 × 10^3 b 6.2 × 10^3 c 6.2 × 10^−3 27 Round up 0.249 to two decimals. a 0.25 b 0.250 c 0.24 28 Which is correct for 5000 in scientific notation? a 5 × 10^4 b 0.5 × 10^4 c 5.0 × 10^3 29 Which number has fewer sig figs: 3.400, 3.40, 3.4? a 3.40 b 3.400 c 3.4 30 Estimate 64.8 − 29.9 by rounding the tens. a 36 b 45 c 40 31 What does rounding to the nearest ten do? a Keeps tens place b Removes decimals c Keeps ones place 32 Round 0.9999 to two decimals. a 1.01 b 0.99 c 1.00 33 What is the decimal form of 3.2 × 10^−1? a 0.32 b 3.2 c 0.0032 34 Round 15.2 to the nearest whole number. a 15 b 16 c 15.2 35 What is the rule for rounding to N decimal places? a Always round up b Look at (N+1)th digit c Ignore it 36 Express 0.00520 with two significant digits. a 0.00520 b 0.0520 c 0.0052 37 Which is rounding up: 6.449 to two decimals? a 6.49 b 6.44 c 6.45 38 Scientific notation for 1,600,000 is: a 1.6 × 10^5 b 1.6 × 10^6 c 16 × 10^5 39 Round 0.12345 to three decimals. a 0.123 b 0.124 c 0.1235 40 What is precision in measurements? a Consistency of results b Size of measurement c Number of digits 41 Which has most digits after decimal? 1.230, 1.23, 1.2300 a 1.23 b 1.230 c 1.2300 42 Round 999.995 to the nearest thousand. a 1001 b 1000 c 999 43 In scientific notation, 0.00045 equals: a 0.00045e4 b 4.5 × 10^4 c 4.5 × 10^−4 44 Which is a correct significant figure count for 700.0? a 2 b 3 c 4 45 Round 8.999 to two decimals. a 9 b 8.99 c 9.00 46 What is 0.300 rounded to two sig figs? a 0.300 b 0.30 c 0.3 47 Which is rounding down? 12.74 to one decimal place. a 12.8 b 12.7 c 12.74 48 Express 7.0 × 10^1 in standard form. a 700 b 7 c 70 49 Which is the nearest ten of 56? a 60 b 50 c 56 50 Which statement describes rounding? a Ignore digits b Always exact c Approximate to a chosen accuracy

Fractions And Decimals 1 ( Form 2, Mathematics)

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Fractions And Decimals 1 ( Form 2, Mathematics)Online version

by YAKILI LMS

What is 125 rounded to the nearest ten?

Round 6.47 to one decimal place.

Estimate 128 + 73 using nearest ten.

Round 0.849 to two decimal places.

Which is round up? 2.34 to one decimal place.

Estimate 0.999 to the nearest whole number.

Round 123.456 to the nearest whole number.

What is the significant digit of 0.00456 (3 sig figs)?

Which number has the most significant digits? 0.00340, 0.0304, 0.000304

Round 15.999 to the nearest tenth.

Estimate 49.8 ÷ 2 by rounding.

Round down 7.081 to two decimal places.

Which is rounding down? 3.456 to two decimals.

What does precision refer to in a measurement?

Significant figures: 0.00420 has how many sig figs?

Express 52000 in scientific notation.

Which is scientific notation for 3.0 × 10^6?

Round 0.00086 to three significant figures.

A measurement is 12.3456 cm. How many sig figs if rounded to 4?

Estimate 2.97 × 10^2 to the nearest ten.

Round 9.999 to the nearest whole number.

Which value is rounded up? 0.502 to two decimals.

What is the rule for rounding decimals? If next digit ≥ 5,

Express 0.037 with three significant figures.

Round 1234.56 to the nearest hundred.

Scientific notation for 0.0062 is:

Round up 0.249 to two decimals.

Which is correct for 5000 in scientific notation?

Which number has fewer sig figs: 3.400, 3.40, 3.4?

Estimate 64.8 − 29.9 by rounding the tens.

What does rounding to the nearest ten do?

Round 0.9999 to two decimals.

What is the decimal form of 3.2 × 10^−1?

Round 15.2 to the nearest whole number.

What is the rule for rounding to N decimal places?

Express 0.00520 with two significant digits.

Which is rounding up: 6.449 to two decimals?

Scientific notation for 1,600,000 is:

Round 0.12345 to three decimals.

What is precision in measurements?

Which has most digits after decimal? 1.230, 1.23, 1.2300

Round 999.995 to the nearest thousand.

In scientific notation, 0.00045 equals:

Which is a correct significant figure count for 700.0?

Round 8.999 to two decimals.

What is 0.300 rounded to two sig figs?

Which is rounding down? 12.74 to one decimal place.

Express 7.0 × 10^1 in standard form.

Which is the nearest ten of 56?

Which statement describes rounding?