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
65 + 20 = ______
9 × 10 = ______
5 × 10 = ______
26 − 10 = ______
38 + 10 = ______
4 × 10 = ______
8 × 10 = ______
49 + 20 = ______
3 × 10 = ______
71 − 10 = ______
32 + 20 = ______
84 − 10 = ______
50 + 10 = ______
7 × 10 = ______
51 + 10 = ______
39 + 20 = ______
73 − 10 = ______
35 − 10 = ______
62 + 10 = ______
46 + 20 = ______
