الجمع 16 + 16 بالقيمة المكانية
تعلّم كيف تجمع 16 + 16 بتقسيم الأعداد إلى عشرات وآحاد، وإعادة تجميع 12 آحادًا، ثم جمع القيم المكانية للحصول على 32.
Problem
Can you please tell me with explanation?
Step 1: Break Numbers into Place Values
To add , break each number into tens and ones.
Each is made of ten and ones:
So,
This means we have tens and ones.
Step 2: Add the Ones
Now add the ones:
So the ones make ones.
Step 3: Regroup the Ones
Since ones is more than ones, we regroup.
ones make ten, with ones left over:
So ones becomes ten and ones.
Step 4: Add the Tens
Now add the tens.
We started with tens, and regrouping gave us more ten:
So we have tens.
Step 5: Combine Tens and Ones
tens means , and ones means .
Now combine them:
So,
المفاهيم
Understanding Addition
Learning what addition means: putting two groups together to find the total. Recognizing the plus sign and the equal sign, and understanding that the order of addends does not change the sum.
Addition Facts Within 20
Adding two numbers where the sum is between 11 and 20. Strategies include making a ten (for example, ), using doubles like , and near doubles like .
Understanding Multiplication
Learning that multiplication is a shortcut for adding equal groups. For example, means 4 groups of 3, which is the same as . Can be shown with arrays, equal groups, and jumps on a number line.
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