SchoolNova Math3 Unit 21 - CW

Transcription

1 SchoolNova Math Unit - CW Write down the epressions: Hannah bought desserts at the baker. She bought A cupcakes that cost $ each and D cookies that cost B dollars each. If she ate C cookies, how much mone did she spend? Henr gets paid E dollars for mowing a lawn and four times as much for washing a car. How much mone would Henr make if he mowed 6 lawns and washed cars? Bobb shared a bo of cookies with his friend. He gave B cookies to his friend and had 0 left. If Bobb has boes of cookies, how man cookies are there total? There are books on a shelf. H books have 9 pages and K books have pages. How man pages are there in total? Julia had Q flowers after she gave half of them to a friend. How man flowers did Julia start with? Calculate: ( 6) = 6 + ( ) = 6 ( ) + ( ) = ( ) ( 8) 8 = ( ) + ( ) = ( ) + ( ) = ( ) 8 + ( ) = ( 6) ( ) = + ( ) = cm The shape is made out of two squares. Find the area of the smaller square. R W 9 cm

2 Stud the numbers in set Q. Finish the correct statements. Q = { 6,, 8, 9, 89, 0} All these numbers Some of these numbers are not At least one of these numbers None of these numbers The ancient Egptians wrote numbers using smbols, or hieroglphics. The smbols for numbers are shown in the table below: Number Smbol Description Vertical stroke 0 Heel bone 00 ൭ Scroll 000 ꘫ Lotus flower 0,000 ꔿ Pointing finger 00,000 ꔢ Fish 000,000 ꘐ Kneeling person To write a number in ancient Egptian smbols, ou write down the right number of smbols. For eample,,0 = thousands, tens, and ones Write each of these numbers in Egptian smbols: 9 = 6 =,0 = 0 ꘫꘫꘫꘫ OR ꘫꘫꘫꘫ Which numbers are represented b the smbols? ꔢꔢꔢ൭൭ ꘫꘫꘫꘫ൭൭ ꘐꘐꘐꘐꘐ ꘐꔿꔿꔿ൭൭൭

3 Plot the image of each shape after transformations: units right, unit down unit right units down See blue arrow W R S T K M L E Z P Q move Describe each transformation. Plot an appropriate arrow on each graph. Plot the images of these points after the translations: A(,); B(-, -), C(-;) P(-,); R(-, ), C(;); D(,-) S(-,); T(-, -), X(;) units, units units units, units

4 6 Calculate: : : = = : = = : = = = = : = = 9 : = 9 = Calculate: Dividing a whole number into a fraction is equivalent to multipling this number b n: p : n = p n This is true if p is a fraction as well! n 6 : = 6 = : = = 9 : = 9 = 8 Solve the word problems: Little Joe used one quarter of 0 packs of sliced cheese. How man packs remained? Fo tail chewed books at the local librar. It was one fifth of the books in the children's section. How man books were in that section originall? 9 Solve the equations below. Use rectangle diagrams for help. = : = : = = : = = = = =

5 0 Do the arithmetics with magic numbers that are plotted on the magic number line Θ Λ Σ Ω Λ + = Θ + ( ) = Σ + ( ) = Λ + ( ) = Θ ( ) = Σ ( ) = + = Θ = Ω Λ Ω = Solve the equations. Use the help of rectangle diagrams. = : = w : = = = w = = = w = Alice is ounger than Lisa. Bob is older than Cole. Julie is older than Lisa. Lisa is ounger than Cole. Bob is older than Julie. Which of the kids is the oungest? Whose ages cannot be compared?

6 6 Proper, Improper, Mied Fractions. Proper fractions Improper fractions Mied fractions Its factor is smaller than its denominator. Eamples: Its factor is larger than its denominator. Eamples: A combination of a whole number and a proper fraction. Eamples: Converting Mied Fractions to Improper Fractions To convert a mied fraction to an improper fraction, follow these steps: Multipl the whole number part b the fraction's denominator. Add that to the numerator Write that result on top of the denominator. Eample: Convert / to an improper fraction. Multipl the whole number b the denominator: = Add the numerator to that: + = Then write that down above the denominator, like this: Converting Improper Fractions to Mied Fractions To convert an improper fraction to a mied fraction, follow these steps: Divide the numerator b the denominator. Write down the whole number answer Eample: Convert / to a mied fraction. Divide: = with a remainder of Write down the and then write down the remainder () above the denominator (), like this:

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