Decimals.

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Presentation transcript:

Decimals

Arrange the following in the descending order: 0.2 , 2.02 , 2.202 , 0.202 , 2.002 , 0.002 Click to get the right answer: Click

Arrange the following in the ascending order : 4.506 , 0.456 , 4.056 , 4.605 0.506 , 0.564 , Click to get the right answer: Click

Write in words: 0.56 0.345 2.78 8.003 Five tens and point six, Two and seven tenths and eight hundredths Five tenths and six hundredths three tenths four hundredths and five thousandths Eight and three thousandths Eight point three Two and seven tens and eight hundreds

Click to check your answers: Write in the expanded form: 9.005 = 0.092 = 34.89 = 123.045 = 30 + 4 + + 100 + 20 +3+ + 9 + 9 + + 100 + 20 +3+ + 30 + 4 + + +

Click to check your answers: Write in the form of decimal fraction: 0.004 = 9.923 = 70.086 = 235.02 = 235 9 9 235 70 70

Multiply: a) 347.56 × 10 = b) 0.0051 × 1000 = c) 0.00002 × 100 = d) 59.3412 × 10000 = e) 0.00805 × 10 = f ) 2.3409 × 1000 = g) 1.010101 × 100 = h) 4.00404 × 1000 = i) 3.2908 × 10 = j) 0.000001 × 100000 = 4004.04 40.0404 0.02 0.002 0.0805 0.805 5.1 0.51 32.908 0.1 3475.6 101.0101 2340.9 593412

Fill in the blanks: 1) ……….. × 100 = 8482.1 2) ………. × 10 = 9800 3) ……….. × 1000 = 230.701 4) ……….. × 100 = 0.674 5) ……….. × 10 = 3.05 6) …………… ×1000 = 0.10025 7)…………./ 100 = 67.4 8) …………/ 10 = 2307.01 9) …………./1000 = 305 10) …………/ 100 =0.98 9.8 980 305000 0.305 23070.1 6740 0.00674 0.00010025 0.230701 84.821 98 3.05 1.005 6.74

Fill in the blanks: 1) 23.4 × ……….. = 0.234 2) 1.00085 × …………. = 100.085 3) 0.00967 × …………..= 9.67 4) 56.0095 / ………… = 0.00560095 5) 7098.235 / ………..= 709.8235 6) 10.0002 × ………… = 0.100002 7) 48500.6 × ………….= 4.85006 8) 234.567 / …………. =23456700 9) 0.0001 / ……………= 1 10) 0.00425 / ………….= 4.25 1/ 100000 1000 100 10000 1/100 1/10000 1/ 10 1/10000 10 1000 1/100 1/1000

Fill in the blanks : 1) 23.1234 × 1000 =……………. 2) ( 23.45 + 459.25) × 10 =……………. 3) 0.001 × 1000000 =…………… 4) 25 × ………………. = 0.000025 5) 0.874 × ………….. = 87.40 6) 5.55 × 10 × ……………… = 0.000555 7) 34.56 / ………… = 0.03456 8) 763.1089 / ……………… = 0.00007631089 9) 0.002 × …………… = 200 10) 0.504 × 10 ×………. = 50.4 1/ 100000 10 1/10000000 10000000 1000 100000 100 1/1000000 4827 23123.4 482.0

0.00064 0 .000064 256 0.000256 0.0064 Multiply : a) 0.4 × 0.4 × 0.04 = b) 0.004 ×0.4 × 0.04 × 4.0 = c) 16 × 0.01 × 0.2 × 0.002 = d) 0.8 × 2.0 × 0.0004 =

Evaluate the following without converting into fractions: 1) 23.4 × 0.2 = 2) 0.4 × 4.1 = 3) 1.1 × 0.11 = 4) 0.12 × 30 = 5) 19.2 / 0.03 = 6) 102.4 / 0.4 = 7) 1.25 / 0.0004 = 8) 7.07 / 0.101 = 46.8 1.21 1.64 36.0 640 256 3125 7 4.68 0.121 70 25.6 16.4 3.6

0.00025 0.0025 80.2 80.02 5.6 56 0.5 0.05 10 100 Evaluate: 1) 0.05 × 200 = 2) 0.125 × 4 = 3) 1.12 × 50 = 4) 2.005 × 40 = 5) 1.25 × 0.0002 =

If the length of one stick is 75cm If the length of one stick is 75cm. What is the length in meters of 100 sticks ? Ans………….. 7500 m 75 m 0.75 m 750 m

If the weight of one iron ball is 0 If the weight of one iron ball is 0.45 grams, what is the weight in kilograms of 200 balls ? Ans…………………. 90 kg 0.09kg 0.9kg 9kg

A wire of length 1m is divided into 5 equal parts A wire of length 1m is divided into 5 equal parts. Find the length of each part ? Ans……….. 0.2 cm 2m 20cm 0.002