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整数最容易 = nombor bulat paling mudah 已知的加数是整数，另一个加数用“和减整数”求。整数只会改变和的整数部分，所以小数部分可以原样照抄，每个 0 都要保留。 例子：4 + □ = 9.305 → 9 − 4 = 5，小数部分照抄 → 5.305。 注意：小数部分中间的 0 不能省略，省略了数值就改变了。

a whole number is easiest = nombor bulat paling mudah The known number is whole, so find the other by subtracting it from the total. A whole number changes only the whole number part, so copy the decimal part exactly, keeping every zero. Example: 4 + □ = 9.305: 9 − 4 = 5, copy the decimals, so 5.305. Watch out: a zero in the middle of the decimal part cannot be dropped, or the value changes.

用减法 = gunakan tolak 已知总和和一个加数，另一个加数就是“总和 − 已知加数”。把一位小数补 0 写成两位小数，小数点对齐，从百分位减起。算完加回去检查。 例子：□ + 1.5 = 6.85 → 6.85 − 1.50 = 5.35；检查 5.35 + 1.5 = 6.85。 注意：不补 0 就容易把数字对错位；求加数不能用加法。

use subtraction = gunakan tolak When the total and one addend are known, the other addend is the total minus the known addend. Fill a zero so both have two decimal places, line up the points and subtract from the hundredths. Check by adding back. Example: □ + 1.5 = 6.85: 6.85 − 1.50 = 5.35; check 5.35 + 1.5 = 6.85. Watch out: without the zero it is easy to misalign the digits, and do not add to find a missing addend.

找不对的一对 = cari pasangan yang salah 这题要找“加起来不等于”题目那个数的一对。每一对都对齐小数点相加；结果的最后面如果多了 0（例如 7.30），它和 7.3 是一样的数。三对都算完，只有一对的和不一样。 例子：1.25 + 2.05 = 3.30 = 3.3；2.7 + 0.7 = 3.4，不是 3.3。 注意：看清楚题目问的是“不”等于的那一对，也要记得小数后面的 0 不改变数值。

find the pair that does not work = cari pasangan yang salah This question wants the pair whose sum is NOT the number given. Add each pair with the decimal points lined up; a zero at the end of a result (like 7.30) is the same number as 7.3. After working out all three, only one pair gives a different sum. Example: 1.25 + 2.05 = 3.30 = 3.3, but 2.7 + 0.7 = 3.4, not 3.3. Watch out: the question asks for the pair that does NOT work, and a zero at the end of a decimal does not change its value.