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
81 + 10 = ______
4 × 10 = ______
80 − 10 = ______
54 + 20 = ______
71 − 10 = ______
24 + 10 = ______
35 + 10 = ______
7 × 10 = ______
45 + 10 = ______
25 − 10 = ______
45 + 20 = ______
87 + 10 = ______
69 + 20 = ______
26 − 10 = ______
51 + 10 = ______
70 − 10 = ______
47 + 10 = ______
1 × 10 = ______
9 × 10 = ______
53 + 20 = ______
