randRange(10, 99)
randRange(10, 99)
digits(N1)
digits(N2)
N1 < N2 ? "<" : ">"
Fill in the blank.
\large{N1} ____ \large{N2}
SOLUTION
randRange(1, 9)
randRange(1, 9)
A*10 + B
B*10 + A
[B, A]
[A, B]
N1 < N2 ? "<" : ">"
Fill in the blank.
\large{N1} ____ \large{N2}
SOLUTION
randRange(1, 9)
randRange(1, 9)
randRange(1, 2)
C*100 + A*10 + B
C*100 + B*10 + A
digits(N1)
digits(N2)
N1 < N2 ? "<" : ">"
Fill in the blank.
\large{N1} ____ \large{N2}
SOLUTION
\large{<} means "less than".
\large{>} means "greater than".
\large{\qquad \blue{D1[2]}
\green{D1[1]}\red{D1[0]}} =
\blue{\large{D1[2] \times 100}} +
\green{\large{D1[1] \times 10}} + \red{\large{D1[0]}}
var scale = 12;
var height = (D1.length === 2) ? 1.5 * D1[1] : Math.max(10.5 * D1[2], 1.5 * D1[1]);
init({
range: [[-1, 36], [-1.5, height + 0.1]],
scale: scale
});
style({
fill: BLUE,
fillOpacity: 0.6,
strokeWidth: 2,
stroke: KhanUtil.BACKGROUND
});
x = 0;
if (D1.length > 2) {
for (var i = 0; i < D1[2]; i++) {
rect(0, i*10.5, 10, 10);
grid([0, 10], [0, 10], {strokeWidth: 1}).translate(0, -scale * 10.5 * i - 0.5);
}
label([5, -0.9], D1[2], "center", {color: BLUE});
x += 11;
}
for (var i = 0; i < D1[1]; i++) {
rect(x, i*1.5, 10, 1, {fill: GREEN});
grid([0, 10], [1.5 * i, 1.5 * i - 1], {strokeWidth: 1}).translate(scale * x, -scale);
}
label([x + 5, -0.9], D1[1], "center", {color: GREEN});
for (var i = 0; i < D1[0]; i++) {
rect(x + 11 + i * 1.25, 0, 1, 1, {fill: RED});
}
label([x + 11 + (1.25 * D1[0] - 0.25) / 2, -0.9], D1[0], "center", {color: RED});
\large{\qquad \blue{D2[2]}
\green{D2[1]}\red{D2[0]}} =
\blue{\large{D2[2] \times 100}} +
\green{\large{D2[1] \times 10}} + \red{\large{D2[0]}}
var scale = 12;
var height = (D2.length === 2) ? 1.5 * D2[1] : Math.max(10.5 * D2[2], 1.5 * D2[1]);
init({
range: [[-1, 36], [-1.5, height + 0.1]],
scale: scale
});
style({
fill: BLUE,
fillOpacity: 0.6,
strokeWidth: 2,
stroke: KhanUtil.BACKGROUND
});
x = 0;
if (D2.length > 2) {
for (var i = 0; i < D2[2]; i++) {
rect(0, i*10.5, 10, 10);
grid([0, 10], [0, 10], {strokeWidth: 1}).translate(0, -scale * 10.5 * i - 0.5);
}
label([5, -0.9], D2[2], "center", {color: BLUE});
x += 11;
}
for (var i = 0; i < D2[1]; i++) {
rect(x, i*1.5, 10, 1, {fill: GREEN});
grid([0, 10], [1.5 * i, 1.5 * i - 1], {strokeWidth: 1}).translate(scale * x, -scale);
}
label([x + 5, -0.9], D2[1], "center", {color: GREEN});
for (var i = 0; i < D2[0]; i++) {
rect(x + 11 + i * 1.25, 0, 1, 1, {fill: RED});
}
label([x + 11 + (1.25 * D2[0] - 0.25) / 2, -0.9], D2[0], "center", {color: RED});
\large{N1} is bigger than \large{N2}.
\large{N1} is smaller than \large{N2}.
Therefore \large{N1 > N2}.
Therefore \large{N1 < N2}.