make a number; [ ] means a digit's value depends on its position.","back":"A digit is one symbol used to make a number; place value means a digit's value depends on its position.","points":null},{"id":"3295fea9-4d25-4d8d-981c-67719507215d","cardType":"basic","front":"In column addition or subtraction, what should be directly underneath each other?","back":"Matching place values.","points":1},{"id":"d619df84-66ff-41e8-bfc5-0c631883b817","cardType":"cloze","front":"[ ] combines amounts to find a total; its answer is the [ ].","back":"Addition combines amounts to find a total; its answer is the sum.","points":null},{"id":"0e1394b4-f585-4e06-b480-7576fa898c84","cardType":"basic","front":"In column addition, when do you carry?","back":"When a column totals 10 or more.","points":1},{"id":"1a0925cf-f40c-4467-a2a2-f93bf2f71815","cardType":"cloze","front":"Carrying moves extra value into the [ ]: 14 ones = [ ].","back":"Carrying moves extra value into the next place value column: 14 ones = 4 ones and 1 ten.","points":null},{"id":"e877bed7-4f03-4fe7-848a-977543065a6a","cardType":"basic","front":"Work out $346 + 78$.","back":"424","points":1},{"id":"b8b5ce1a-0412-42df-9c28-4e4c6204743a","cardType":"cloze","front":"[ ] takes one amount away; its answer is the [ ].","back":"Subtraction takes one amount away; its answer is the difference.","points":null},{"id":"5bc7bad1-d756-47e8-b734-a0e6cd50d1aa","cardType":"basic","front":"In subtraction, when do you exchange?","back":"When the top digit is too small.","points":1},{"id":"5602e085-8b64-4f9b-8faa-7ca8db5c7cef","cardType":"cloze","front":"Exchanging takes [ ] from the next column and changes it into [ ] in the current column.","back":"Exchanging takes 1 from the next column and changes it into 10 in the current column.","points":null},{"id":"aadc1878-01a3-4b54-8457-e16a1e733ae4","cardType":"basic","front":"Work out $2470 - 638$.","back":"1832","points":1},{"id":"fdc87d28-a67d-484e-95eb-092fa611df6f","cardType":"basic","front":"How can you check a subtraction answer?","back":"Check answer + amount subtracted = starting number.","points":2},{"id":"f0516cad-9249-4717-87a8-ac816c1d1b77","cardType":"basic","front":"For decimal addition or subtraction, what must be lined up first?","back":"The decimal points.","points":1},{"id":"7a73a111-7299-4ff2-b533-7a36542f7033","cardType":"basic","front":"Why does lining up decimal points align the digits correctly?","back":"It aligns ones, tenths and hundredths.","points":2},{"id":"445d9ab6-2304-47c7-a9f9-ea7f2a92d27b","cardType":"cloze","front":"Adding zeros to the end of a decimal [ ]: 7.5 = [ ].","back":"Adding zeros to the end of a decimal does not change its value: 7.5 = 7.50.","points":null},{"id":"e1ab1351-7288-4cc1-8cb7-51497b6a968c","cardType":"basic","front":"What is wrong with lining up decimal numbers by their right-hand ends?","back":"Place values may not match.","points":2},{"id":"91babc70-ae47-4a56-bd74-de0d6904e82

Addition and Subtraction Flashcards

Addition and Subtraction Flashcards

Addition and Subtraction Flashcards

Addition and Subtraction Flashcards