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
38 + 20 = ______
93 − 10 = ______
81 + 20 = ______
2 × 10 = ______
6 × 10 = ______
8 × 10 = ______
5 × 10 = ______
27 + 20 = ______
88 − 10 = ______
57 + 10 = ______
4 × 10 = ______
31 + 20 = ______
87 − 10 = ______
83 − 10 = ______
66 + 10 = ______
52 + 10 = ______
15 + 20 = ______
79 + 20 = ______
26 + 20 = ______
70 + 10 = ______
