sp; ] digit.","back":"The first significant figure in a number is the first non-zero digit.","points":null},{"id":"24292282-7cdb-4830-9b42-a0f75960ad2d","cardType":"basic","front":"To how many significant figures should you usually round numbers for a GCSE estimation problem?","back":"1 significant figure","points":1},{"id":"dbda9120-7fbf-4265-9a8d-2c92b1dbadef","cardType":"basic","front":"Round 0.52 to 1 significant figure.","back":"0.5","points":1},{"id":"f6ee8b23-823a-4452-814a-fea14f194174","cardType":"basic","front":"Round 12.4 to 1 significant figure.","back":"10","points":1},{"id":"1741dd88-65e7-41a0-9254-63182c7acca7","cardType":"cloze","front":"When estimating 0.184 to 1 significant figure, the result is [ ].","back":"When estimating 0.184 to 1 significant figure, the result is 0.2.","points":null},{"id":"29a373c3-cd76-47f7-8c6c-8b873f2bacd8","cardType":"basic","front":"When should you round numbers during an estimation calculation?","back":"Round before performing any calculations.","points":1},{"id":"18904e5d-d38c-4609-a1ac-62b9605bb9cd","cardType":"basic","front":"Estimate the value of $\\frac{47.8 \\times 61.6}{12.1}$.","back":"

Rounded: $\\frac{50 \\times 60}{10}$
Calculation: $3000 \\div 10$
Result: 300

","points":2},{"id":"0e035668-1458-45a3-bbb9-25bbc5d00dfe","cardType":"basic","front":"What is a quick way to divide a number by 0.5?","back":"Multiply the number by 2.","points":1},{"id":"5b3651fc-0103-4fc7-b4fc-9977814e122b","cardType":"basic","front":"What is a quick way to divide a number by 0.2?","back":"Multiply the number by 5.","points":1},{"id":"c1d13df1-6ccd-4dd9-82ac-7924f36fd28c","cardType":"cloze","front":"Dividing a number by 0.1 is the same as [ ] the number by 10.","back":"Dividing a number by 0.1 is the same as multiplying the number by 10.","points":null},{"id":"f5c8913e-950e-4b8a-b7ec-587d946846fc","cardType":"cloze","front":"Dividing a number by 0.1 is the same as multiplying the number by [ ].","back":"Dividing a number by 0.1 is the same as multiplying the number by 10.","points":null},{"id":"1a2130be-4b1b-4e28-a4c3-d2384b8aa1dd","cardType":"basic","front":"When estimating square roots, what should you round the number inside the root to?","back":"The nearest perfect square (e.g., 25, 49, 100).","points":1},{"id":"ab361eff-9311-4218-a3bd-2b8a36d0ec59","cardType":"basic","front":"Estimate the value of $\\sqrt{101.2}$.","back":"10 (since $\\sqrt{100} = 10$)","points":1},{"id":"f359ce0a-d066-43de-a471-12af391b44f8","cardType":"cloze","front":"An underestimate is an answer that is [ ], while an overestimate is too large.","back":"An underestimate is an answer that is too small, while an overestimate is too large.","points":null},{"id":"9c0a8c35-bcff-41f5-a62f-d252b11802d9","cardType":"cloze","front":"An underestimate is an answer that is too small, while an overestimate is [ ].","back":"An underestimate is an answer that is too small, while an overestimate is too large.","points":null},{"id":"18ee62f0-b95c-463d-b8d1-d6c49d0d13a6","cardType":"basic","front":"In positive multiplication, w

Estimating Flashcards

Estimating Flashcards

Estimating Flashcards

Estimating Flashcards