به انگلیسی

Division as a Missing Factor

ریاضی · ضرب و تقسیم · سن ۸ تا ۹ سال

نام ______________________ تاریخ ____________

Which multiplication fact helps with 54 ÷ 9?
- 9 × 5 = 45
- 6 × 9 = 54
- 9 + 6 = 15
- 9 × 9 = 81
What is 18 ÷ 3?
- 6
- 5
- 7
- 9
Which question is the same as 24 ÷ 6 = ?
- 6 × ? = 24
- 6 + ? = 24
- 24 × 6 = ?
Division and multiplication are inverse operations.
دور یکی دایره کشیدن: درست نادرست
Sam says multiplication and division undo each other, so 6 × 7 = 42 means 42 ÷ 7 = 6. Is Sam right?
دور یکی دایره کشیدن: درست نادرست
Which multiplication fact helps you solve 45 ÷ 5?
- 5 × 9 = 45
- 5 × 8 = 40
- 5 + 9 = 14
What is 35 ÷ 5?
- 8
- 9
- 7
- 6
What is 48 ÷ 6?
پاسخ: ______________
Leo says 56 ÷ 8 = 6 because he guessed a number close to 8. What went wrong?
- He should have added 8 six times
- Nothing, his answer is correct
- He should have asked: 8 times what equals 56?
Jess says 36 ÷ 4 = 9 must be true because 9 × 4 = 36. Is Jess right?
دور یکی دایره کشیدن: درست نادرست

پاسخ‌نامه

برای بزرگ‌ترها. تا کردن این صفحه پیش از تحویل بقیه.

6 × 9 = 54 · 6 × 9 = 54 lands on 54, so 54 ÷ 9 = 6.
6 · 6 is right because 3 × 6 = 18.
6 × ? = 24 · Division asks for the missing factor: 6 times what number makes 24?
درست · Division undoes multiplication by finding the missing factor.
درست · Sam is right: 6 × 7 = 42 and 42 ÷ 7 = 6 belong to the same fact family.
5 × 9 = 45 · 5 × 9 = 45, so 45 ÷ 5 = 9.
7 · 7 is right because 5 × 7 = 35.
8 · 48 ÷ 6 = 8 because 6 × 8 = 48.
He should have asked: 8 times what equals 56? · Leo skipped checking with multiplication. 8 × 7 = 56, so 56 ÷ 8 = 7, not 6.
درست · Jess is right: 9 × 4 = 36, so 36 split into 4 equal groups gives 9 in each.