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
40 + 20 = ______
5 × 10 = ______
35 + 20 = ______
9 × 10 = ______
23 + 20 = ______
38 + 10 = ______
77 − 10 = ______
54 − 10 = ______
42 + 20 = ______
7 × 10 = ______
60 + 10 = ______
22 + 10 = ______
2 × 10 = ______
45 + 10 = ______
54 + 10 = ______
6 × 10 = ______
73 + 10 = ______
51 − 10 = ______
27 − 10 = ______
78 − 10 = ______
