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
15 + 10 = ______
78 + 10 = ______
21 + 20 = ______
4 × 10 = ______
87 + 10 = ______
93 − 10 = ______
52 + 20 = ______
97 − 10 = ______
18 + 10 = ______
94 − 10 = ______
12 + 20 = ______
32 − 10 = ______
5 × 10 = ______
2 × 10 = ______
83 + 10 = ______
86 + 10 = ______
27 + 10 = ______
72 + 20 = ______
62 − 10 = ______
74 − 10 = ______
