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 + 20 = ______
86 + 20 = ______
35 + 10 = ______
50 + 10 = ______
6 × 10 = ______
4 × 10 = ______
73 + 10 = ______
71 + 10 = ______
42 − 10 = ______
30 − 10 = ______
7 × 10 = ______
62 + 10 = ______
38 − 10 = ______
9 × 10 = ______
72 − 10 = ______
43 + 10 = ______
2 × 10 = ______
81 − 10 = ______
27 + 20 = ______
5 × 10 = ______
