Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
3 × 10 = ______
65 + 20 = ______
61 + 20 = ______
16 + 20 = ______
90 − 10 = ______
7 × 10 = ______
50 − 10 = ______
92 − 10 = ______
12 + 10 = ______
66 + 10 = ______
83 + 10 = ______
5 × 10 = ______
4 × 10 = ______
79 + 10 = ______
45 + 20 = ______
11 + 20 = ______
9 × 10 = ______
54 − 10 = ______
2 × 10 = ______
55 − 10 = ______
