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Words and Rules to Know
Eight cards on the chapter's terms and its stated rules.
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The student works the chapter's own end-of-chapter questions unaided and knows where the remaining practice lives.
Preview · progress not saved — Chapter 1 is free
Eight cards on the chapter's terms and its stated rules.
Eight things to tick off before the test.
The five printed multiple choice questions, in rising difficulty.
There are _____ dozens in 264.
Brain Teasers questions 2 and 4.
Brain Teasers Q2 asks you to calculate: (a) 3,282 × 213 (b) 19,816 × 6 (c) 4,172 ÷ 26 (d) 14,865 ÷ 15
Brain Teasers Q4 asks you to divide and check: (a) 2,000 by 12 (b) 7,682 by 45
Calculate the products for the first two items.
Find the quotient and remainder. Watch out for places where you must write a 0!
Write out the full checking equation (Divisor × Quotient + Remainder = Dividend) for both.
Brain Teasers questions 3 and 5, with the way in supplied.
For Q3, figure out how to replace the star (★) with the correct digit or number based on partial rows or division facts. For Q5, you are given that 270 × 15 = 4,050. Use logic (not long multiplication) to find 270 × 16 and 270 × 14.
List the core equation or clue you are starting with.
How do you find covered digits in a long multiplication problem?
Solve for the star in 432 ÷ ★ = 24 and ★ ÷ 60 = 10.
Explain how to find the answers for 16 and 14 using the known product for 15.
State your final computed values.
Brain Teasers questions 6 and 7.
Brain Teasers Q6: What is the total cost of fencing 275 plots of land if the cost of fencing one plot is ₹ 950?
Brain Teasers Q7 asks you to fill in the blanks using mental math and division rules. Be careful on item (h): 7,542 ÷ 1000 = ?
Calculate the total cost using multiplication.
Explain the rules used to solve blanks like 176 ÷ ___ = 176 or ___ ÷ 82 = 0.
The printed book's handwritten note for 7,542 ÷ 1000 is WRONG. Give the real quotient and remainder here.
If you need more practice on items not covered, where in the chapter should you go?
The Value Based Question from page 47, all three parts.
Today is Neha's birthday. She spoke to her parents and they decided to distribute free gifts to the children of an orphanage near their house. Neha distributed gifts worth ₹ 3,360 and was very happy.
Answer the math question, and then reflect on your own celebrations.
If there are 32 children, what is the value of each gift? Show your final checked answer.
How would you like to celebrate your next birthday?
Suggest two different, thoughtful ways in which you can celebrate a birthday.