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
55 + 20 = ______
84 + 10 = ______
74 + 20 = ______
2 × 10 = ______
32 − 10 = ______
90 − 10 = ______
7 × 10 = ______
12 + 20 = ______
26 + 10 = ______
34 − 10 = ______
62 − 10 = ______
64 + 20 = ______
86 − 10 = ______
59 − 10 = ______
78 + 20 = ______
5 × 10 = ______
6 × 10 = ______
66 + 20 = ______
58 + 20 = ______
41 + 20 = ______
