Read the number words and learn how to spell them. one two three four five six seven eight nine ten すう字じをよんで、かん字をかきましょう。 一いち 二に 三さん 四よん／し 五ご 六ろく 七なな／しち 八はち 九きゅう／く […]

A decimal has a decimal point. Here is an example: 72.345 (seventy-two point three four five) The 7 is in the tens place. The 2 is in the ones place. […]

A fraction represents a part of a whole. There is a cake on the table. You cut it into 4 pieces. You ate one of them. What fraction of the […]

Solid figures are three-dimensional figures. A sphere is a 3-D circle, like a baseball. A cube is a 3-D square, like a dice. It has six square faces. A rectangular […]

When two straight lines meet, they form an angle. Right angle: an angle of 90 degrees, as in a corner of a square Acute angle: an angle less than 90 […]

Whole numbers that end in 0, 2, 4, 6, or 8 are even numbers. Whole numbers that end in 1, 3, 5, 7 or 9 are odd numbers. For example, […]

To multiply 2-digit numbers, follow the two steps. Step 1: Multiply the ones. If a product is greater than 9, carry it to the tens.Step 2: Multiply the tens. (1) […]

Division is the opposite of multiplication. It is the process of finding out how many times one number goes into the other number. 12 ÷ 4 = ? (Twelve divided […]

If the number you are rounding is 5 or greater, round up.If the number you are rounding is 4 or less, round down. Let’s round these numbers to the nearest […]

We use different measurement tools. We use a ruler or a tape measure to measure length or width. We use a scale to measure weight. We use a measuring cup […]

You have three baskets. There are four apples in each basket. How many apples are there altogether? You can add like this. 4 + 4 + 4 = 12　The answer […]

Students in English-speaking countries learn multiplication using times tables. For example, students chant the 2 times table like this. Two times one is two. Two times two is four. Two […]