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
4 × 10 = ______
34 + 10 = ______
65 − 10 = ______
89 + 10 = ______
63 + 20 = ______
79 + 10 = ______
64 + 20 = ______
21 − 10 = ______
24 − 10 = ______
81 + 10 = ______
84 − 10 = ______
30 + 20 = ______
86 + 10 = ______
5 × 10 = ______
70 + 20 = ______
56 + 10 = ______
35 − 10 = ______
61 + 20 = ______
3 × 10 = ______
9 × 10 = ______
