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进位到十位 = kumpul semula ke puluh 从十分位加起。十个十分之一等于一，所以十分位满十要进到个位；个位加上进位以后如果又满十，要再进到十位。 例子：5.6 + 4.9 → 十分位 6 + 9 = 15，写 5 进 1；个位 5 + 4 + 1 = 10，写 0 进 1 → 10.5。 注意：十分位只能写一个数字，满十的部分一定要进位，不能把两位数都写进小数部分。

carry into the tens = kumpul semula ke puluh Start with the tenths. Ten tenths make one, so a tenths total of ten or more carries into the ones; if the ones then make ten, carry again into the tens. Example: 5.6 + 4.9: tenths 6 + 9 = 15, write 5 carry 1; ones 5 + 4 + 1 = 10, write 0 carry 1, giving 10.5. Watch out: the tenths place holds only one digit, so carry instead of writing a two-digit number there.

补 0 对齐 = tambah sifar 两个数的小数位数不同时，在较短的那个数后面补 0，让两个数都有两位小数；再对齐小数点，从百分位加起。 例子：0.35 + 2.6 = 0.35 + 2.60 = 2.95。 注意：数字要按数位对齐，不能按最后一个数字对齐；一位小数的数字在十分位，不在百分位。

fill a zero and line up = tambah sifar When the numbers have different numbers of decimal places, put a zero after the shorter one so both have two places. Then line up the decimal points and add from the hundredths. Example: 0.35 + 2.6 = 0.35 + 2.60 = 2.95. Watch out: line up by place value, not by the last digit; a one-place decimal has its digit in the tenths.

三个数 = tiga nombor 三个数的小数位数都不一样：先看谁的小数位最多（三位），把其他数都补 0 到三位小数，整数也写上小数点。对齐以后从千分位加起，一列一列进位。 例子：10 + 0.5 + 0.05 = 10.00 + 0.50 + 0.05 = 10.55。 注意：小数点后面紧跟着 0 时，后面的数字不在十分位，要看清楚每个数字所在的数位。

three numbers = tiga nombor The three numbers have different numbers of decimal places. Find the most (three), fill the others with zeros to three places, and give the whole number a decimal point too. Then add column by column from the thousandths. Example: 10 + 0.5 + 0.05 = 10.00 + 0.50 + 0.05 = 10.55. Watch out: when the first digit after the point is 0, the next digit is not in the tenths; check each digit's place.

求缺的加数 = cari nombor hilang 可以用减法：总和减去已知的加数，补 0 对齐后从右边减起，不够减要向左边一位借 1。也可以按位凑数：从右边一位一位想“加几才得到总和的这一位”。最后把找到的数加回去检查。 例子：□ + 1.5 = 4.2 → 4.2 − 1.5 = 2.7；检查 2.7 + 1.5 = 4.2。 注意：借位后左边那一位要少 1；求缺的加数不能把两个已知数相加。

find the missing number = cari nombor hilang You can subtract: the total minus the known number, lining up with zeros and regrouping when a digit is too small. Or find each digit: ask what must be added in each place to reach the total. Check by adding your answer back. Example: □ + 1.5 = 4.2, so 4.2 − 1.5 = 2.7; check 2.7 + 1.5 = 4.2. Watch out: after borrowing, the place on the left is 1 less, and never add the two known numbers.

应用题 = masalah “一共多重”要把三个重量加起来。先补 0 让它们都有两位小数，小数点对齐；三个数一起加时，一列的和可能超过二十，要看清楚进几。最后写上单位。 例子：0.5 kg + 1.25 kg + 0.8 kg = 0.50 + 1.25 + 0.80 = 2.55 kg。 注意：三个数相加，也可能进 1 以后再加，别漏掉任何一个进位。

a word problem = masalah 'Total mass' means adding the three masses. Fill zeros so all have two decimal places and line up the points. With three numbers a column can make more than ten, so check how much to carry. Write the unit at the end. Example: 0.5 kg + 1.25 kg + 0.8 kg = 0.50 + 1.25 + 0.80 = 2.55 kg. Watch out: with three numbers, do not miss any carried digit.