1.8  ÷ 0.2 =, 0.9, 9, 90, 670 x 0.01 = ____________, 6.7, 0.67, 0.067, 98 ÷ 0.1 = ______, 9.8, 98, 980, 0.14 ÷ 0.01 = _______, 0.0014, 1.4, 14, 140, 20% x 80% = _____%, 16, 1600, 0.016, 60% x 90%= ___%, 42, 52, 54, 0.24 ÷ 0.4 = ____, 6, 0.6, 0.06, 79 = _______%, 0.79, 7900, 79, 2.5% = _______ (decimal), 2.5, 0.25, 250, 0.025, 90 x ( 1+10%) = ______, 910, 91, 99, 9.9, Mary was 40 kg lastyear. She is 15% lighter than last year. How heavy is Mary this year?, 40 x 15%, 40 x ( 1+ 15%), 40 x ( 1- 15%), 40 - 15%, 120 x 25% x 50% = _______, 30, 15, 150, 300, Adien has $500. He spends 20%. How much is left?, 500 x 20%, 500 - 20%, 500 x (1 - 20%), diameter of a circle is 20 cm. Its area is ________ cm2., 1256, 3.14, 314, 80 is ____% 20., 4, 40, 400, 0.25, 20 is _____% of 80., 4, 40, 0.25, 25, Capacity of the box is __________ cm3., 13 x 10 x 6.5, (13 - 0.5 - 0.5) x (10 - 0.5 - 0.5) x (6.5 - 0.5 - 0.5), (13 - 0.5 - 0.5) x (10 - 0.5 - 0.5) x (6.5 - 0.5 ).

Calculation Practice

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