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
24 + 20 = ______
67 + 20 = ______
45 − 10 = ______
64 + 20 = ______
57 + 10 = ______
4 × 10 = ______
88 + 20 = ______
7 × 10 = ______
48 + 20 = ______
65 + 10 = ______
35 − 10 = ______
94 − 10 = ______
86 + 10 = ______
31 + 10 = ______
78 + 20 = ______
5 × 10 = ______
3 × 10 = ______
38 − 10 = ______
2 × 10 = ______
26 − 10 = ______
