第 1 題
1 分What is the result of subtracting 8 from 20?
Key Stage 1 (KS1) · Mathematics
加法與減法：練習題
5 條多項選擇題即時批改，另有 3 條文字題附完整解題步驟，全部圍繞「加法與減法」。
8 條題目13 分免費，無需登記
第 2 題
1 分A baker has 42 cupcakes. He sells 18 cupcakes in the morning and 15 cupcakes in the afternoon. How many cupcakes does he have left at the end of the day?
\( 42 - 18 - 15 = ? \)
第 3 題
1 分Sam has 64 marbles. He gives 28 marbles to Tom and then receives 15 marbles from Sarah. How many marbles does Sam have now?
第 4 題
1 分Calculate the sum:
\(15 + 4 = ?\)
第 5 題
1 分Mary had 50 stickers. She gave some to her brother and has 32 stickers left. How many stickers did she give away?
第 6 題
2 分Calculate the sum of \( 14 \) and \( 23 \).
先自己寫一次答案，再對照解題步驟。
第 7 題
2 分Find the difference between \( 58 \) and \( 16 \).
先自己寫一次答案，再對照解題步驟。
第 8 題
4 分Tom has 12 red marbles and 15 blue marbles in a bag.
(a) How many marbles does he have in total?
(b) If he gives 7 marbles to his sister, how many marbles does he have left?
先自己寫一次答案，再對照解題步驟。
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