Question

multiplication and memory

1. \\(39 \times 6 = 234\\)
2. \\(15 \times 8 = 120\\)
3. \\(15 \times 3 = 45\\)
4. \\(18 \times 5 = 90\\)
5. memory total = \\(489\\)

1. \\(39.87 \times 6 =\\) _______
2. \\(17 \times 86.01 =\\) _______
3. \\(20 \times 135.88 =\\) _______
4. \\(6.20 \times 8.3 =\\) _______
5. memory total = _______

1. \\(52 \times 8 =\\) _______
2. \\(56 \times 9 =\\) _______
3. \\(9.8 \times 2 =\\) _______
4. \\(7 \times 9.1 =\\) _______
5. memory total = _______

1. \\(81 \times 2 =\\) _______
2. \\(11.6 \times 9 =\\) _______
3. \\(5 \times 76 =\\) _______
4. memory total = _______

division and memory

1. \\(70 \div 5 = 14.00\\)
2. \\(636 \div 30 =\\) _______
3. \\(890 \div 20 =\\) _______
4. \\(474 \div 34 =\\) _______
5. memory total = _______

1. \\(5,205 \div 25 =\\) _______
2. \\(87,624 \div 39 =\\) _______
3. \\(31,421 \div 190 =\\) _______
4. \\(24,836 \div 71 =\\) _______
5. memory total = _______

1. \\(84 \div 7 =\\) _______
2. \\(584 \div 36 =\\) _______
3. \\(62.50 \div 14 =\\) _______
4. \\(8,539 \div 79 =\\) _______
5. memory total = _______

Explanation:

Calculate multiplication blocks 17-21 and 22-26

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LATEXBLOCK0
$$

Calculate multiplication blocks 27-30 and division blocks 31-35

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LATEXBLOCK1
$$

Calculate division blocks 36-40 and 41-45

$$
LATEXBLOCK2
$$

Answer:

No.	Answer
13	\(120\)
14	\(45\)
15	\(90\)
16	\(489\)
17	\(239.22\)
18	\(1462.17\)
19	\(2717.60\)
20	\(51.46\)
21	\(4470.45\)
22	\(416\)
23	\(504\)
24	\(19.6\)
25	\(63.7\)
26	\(1003.3\)
27	\(162\)
28	\(104.4\)
29	\(380\)
30	\(646.4\)
31	\(14.00\)
32	\(21.20\)
33	\(44.50\)
34	\(13.94\)
35	\(93.64\)
36	\(208.20\)
37	\(2246.77\)
38	\(165.37\)
39	\(349.80\)
40	\(2970.14\)
41	\(12.00\)
42	\(16.22\)
43	\(4.46\)
44	\(108.09\)
45	\(140.77\)